Electromagnetic heating cooking utensil

Abstract

The invention discloses an electromagnetic heating cooking utensil. The electromagnetic heating cooking utensil comprises a disc-shaped winding assembly and a cooking container. The wire coil assembly comprises at least one disc-shaped winding wire and is used for generating an alternating magnetic field after being electrified, the wire coil assembly is provided with a wire coil assembly central axis, and the wire coil assembly is constructed to enable the magnetic field intensity of the alternating magnetic field to be non-uniformly distributed in the circumferential direction of the wire coil assembly. The cooking container is used for containing food materials, the cooking container is provided with a cooking container central axis, the cooking container comprises a ferromagnetic material, the cooking container is in a revolving body shape with the cooking container central axis as the axis on the whole, and the cooking container and the wire coil assembly are separably arranged in a magnetic induction area of the wire coil assembly. The central axis of the cooking container basically coincides with the central axis of the coil holder. According to the structure of the electromagnetic heating cooking utensil, the cooking container can rotate around the central axis of the cooking container relative to the wire coil assembly, or at least part of the wire coil assembly can rotate around the central axis of the wire coil assembly relative to the cooking container.

Description

Technical Field

[0001] The present application relates to the technical field of cooking appliances, and in particular to an electromagnetic heating cooking appliance. Background Art

[0002] In order to achieve the three-dimensional heating effect of ingredients during cooking and the complex and intense convection heating effect, the existing IH rice cooker has multiple independently controlled coil windings on the coil rack. Through the independent control and heating of the coil windings in different parts, the hot and cold areas in the pot can be variable, that is, different convection directions of the hot and cold areas can be formed in different cooking time periods, so that more than one heat convection tumbling state can be generated, thereby achieving the complex and intense convection heating effect inside the inner pot. Due to the provision of multiple independently heated coil windings, the coil winding arrangement is difficult, the winding method is complex, and the winding process is required to be high, and the magnetic strip and magnetic strip frame structure process is complex, the assembly is difficult, and the overall cost is high. In addition, in order to achieve the complex and intense convection heating effect, multiple groups of independently controlled coil windings are provided, that is, multiple groups of independent power supply control modules need to be provided, so part of the electric control cost is also increased. Moreover, the heating position of the coil winding is fixed, the heating area is limited, and the rice effect is not ideal.

[0003] Therefore, an electromagnetic heating cooking appliance is needed to at least partially solve the above problems. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above problems, the present application provides an electromagnetic heating cooking appliance, which comprises:

[0006] A wire drum assembly, the wire drum assembly comprising at least one coiled wire, the coiled wire being used to generate an alternating magnetic field after being energized, the wire drum assembly having a central axis of the wire drum assembly, the wire drum assembly being configured such that the magnetic field strength of the alternating magnetic field is non-uniformly distributed along the circumferential direction of the wire drum assembly; and

[0007] A cooking container for holding food, the cooking container having a central axis of the cooking container, the cooking container comprising a ferromagnetic material, and the cooking container as a whole is in the shape of a rotating body with the central axis of the cooking container as an axis, the cooking container and the wire reel assembly are detachably arranged in a magnetically inductive region of the wire reel assembly, the central axis of the cooking container substantially coincides with the central axis of the wire reel rack,

[0008] The electromagnetic heating cooking appliance is configured such that the cooking container can rotate relative to the wire reel assembly around the central axis of the cooking container, or at least a portion of the wire reel assembly can rotate relative to the cooking container around the central axis of the wire reel assembly.

[0009] According to the present application, the wire reel assembly can provide a magnetic field that is non-uniformly distributed along the circumference, and make the magnetic field rotate relative to the cooking container, so that the heated part of the cooking container rotates on the cooking container, and the cooking container is evenly heated by the rotation heating method. At the same time, the convection direction inside the cooking container rotates, and the food can be evenly and fully rolled, thereby improving the cooking quality.

[0010] Optionally,

[0011] The wire drum assembly includes a coiled wire, the winding center of the coiled wire is offset from the central axis of the wire drum assembly; or

[0012] The wire drum assembly includes at least two coiled wires, and all of the coiled wires are arranged at intervals along the circumferential direction of the wire drum assembly.

[0013] According to the present application, a non-uniformly distributed magnetic field is provided in the circumferential direction by making the winding center of the disc winding deviate from the central axis of the coil assembly. Multiple disc windings are arranged at intervals to avoid electromagnetic self-interference between the disc windings, as well as problems such as high back pressure, low inductance, low heating power, large storage current, and messy heating waveform.

[0014] Optionally, the wire reel assembly further comprises a wire coiling rack disposed on one side of the cooking container, the wire coiling rack being configured to be rotatable around a central axis of the wire reel assembly, wherein the coiled wire is disposed on the wire coiling rack.

[0015] According to the present application, the coiled wire is arranged on a coiling frame, and the coiling frame rotates, thereby rotating the magnetic field.

[0016] Optionally, the coiled wire is arranged in a coil shape on the wire coiling rack.

[0017] According to the present application, the wire coiling rack is coiled into a coil shape, which can increase the heating area of ​​the cooking container.

[0018] Optionally, the distance between the coiled wire and the cooking container is 3 mm to 30 mm.

[0019] According to the present application, the distance between the disc winding and the cooking container is set between 3 mm and 30 mm to solve the problems of a small area of ​​the cooking container covered by the magnetic field generated by the disc winding and insufficient firepower due to the distance being too large; at the same time, it can also solve the problems of high heat generation and increased energy consumption of the disc winding due to the distance between the disc winding and the cooking container being too small.

[0020] Optionally, the wire drum assembly further includes a magnetic conductive member, and the magnetic conductive member at least partially extends along the magnetic lines of force of the alternating magnetic field.

[0021] According to the present application, the magnetic conductive member can focus the magnetic lines of force of the magnetic field to avoid energy loss.

[0022] Optionally, the coiled wire is coiled around the central axis of the wire drum assembly and forms a radially symmetrical shape with the central axis of the wire drum assembly as an axis.

[0023] Furthermore, the cable drum assembly further comprises a drum body, and the drum body comprises:

[0024] a disc body, the disc body having a geometric center axis, the geometric center axis being the center axis of the wire disc assembly, the disc body being configured to be rotatable relative to the disc-shaped winding about the center axis of the wire disc assembly; and

[0025] At least one first region and at least one second region are correspondingly arranged, and the first region and the second region are alternately arranged on the disk body along the circumferential direction of the disk body, and the first region includes a medium different from the disk body, so that the magnetic field strength of the alternating magnetic field at the first region is different from the magnetic field strength at the second region.

[0026] According to the present application, the winding center of the disc-shaped winding coincides with the central axis of the wire disc assembly, and the non-uniform distribution of the magnetic field along the circumferential direction is achieved through the non-uniform structure of the disc body along the circumferential direction.

[0027] Optionally, the wire reel assembly further comprises a wire reel rack, which is arranged on one side of the cooking container.

[0028] The coiled wire is coiled around the central axis of the wire reel assembly on the surface of the wire reel frame, and the reel body is configured to be rotatable relative to the wire reel frame around the central axis of the wire reel assembly.

[0029] According to the present application, a wire reel is used to support a coiled wire.

[0030] Optionally, the disk body is made of a metal material with a magnetic permeability less than or equal to 10 B / H, and the first region includes at least one opening for allowing magnetic lines of force of the alternating magnetic field to pass through.

[0031] According to the present application, a part of the disk allows magnetic lines of force to pass through so as to form a non-uniformly distributed magnetic field.

[0032] Optionally,

[0033] The distance between the disc body and the disc winding is 3.5 mm to 10 mm; and / or

[0034] The disc body has a thickness of 0.4 mm to 2 mm.

[0035] According to the present application, the distance between the disk body and the disk-shaped winding can ensure that a sufficient number of magnetic lines of force pass through the disk body, and the thickness of the disk body can be relatively thin to save costs.

[0036] Optionally,

[0037] The area of ​​a single opening is 28 mm 2 Up to 5024mm 2 ; and / or

[0038] The area of ​​all the openings accounts for 10% to 70% of the area of ​​the disk body.

[0039] According to the present application, the openings of the disc body can be flexibly arranged.

[0040] Optionally, the disk body is made of a first material, the first region is provided with at least one magnetic line of force gathering member, and the magnetic line of force gathering member comprises a second material different from the first material.

[0041] According to the present application, the disc body makes the magnetic field non-uniformly distributed through the non-uniform distribution of the material.

[0042] Optionally, the first material is a non-magnetic material or a metal with a magnetic permeability less than or equal to 10 B / H, and the second material is a metal with a magnetic permeability greater than or equal to 100 B / H.

[0043] According to the present application, the disk body makes the magnetic field non-uniformly distributed by making the magnetic permeability of the material different.

[0044] Optionally, the magnetic field line gathering member is connected to the disk body via at least one of the following connection structures:

[0045] The magnetic field line gathering member is embedded in the disk body.

[0046] The magnetic line gathering member is attached to the surface of the disk body, and

[0047] The magnetic line gathering member is snap-connected with the disk body.

[0048] According to the present application, the arrangement of the magnetic line gathering member is flexible.

[0049] Optionally,

[0050] The distance between the magnetic field line gathering member and the disc winding is 1 mm to 15 mm; and / or

[0051] The thickness of the magnetic line gathering member is 2 mm to 10 mm.

[0052] According to the present application, the distance between the magnetic line gathering member and the disc-shaped winding can be flexibly set, and the thickness of the magnetic line gathering member can be flexibly set.

[0053] Optionally,

[0054] The area of ​​a single magnetic field gathering piece is 28mm 2 Up to 5024mm 2 ; and / or

[0055] The area of ​​all the magnetic flux converging members accounts for 10% to 70% of the area of ​​the disk body.

[0056] According to the present application, the area of ​​the magnetic line gathering member can be flexibly set.

[0057] Optionally, the second area is provided with at least one heat dissipation hole.

[0058] According to the present application, the heat dissipation holes can help the coiled wire to dissipate heat.

[0059] Optionally, in a projection of the wire drum assembly along an extension direction of a central axis of the wire drum assembly, the coiled wire forms an annular area or a circular area with the central axis of the wire drum assembly as a center.

[0060] According to the present application, the coiled wire can be coiled into a circle or an annular shape around the central axis of the wire drum assembly, and the winding is simple.

[0061] Optionally, the electromagnetic heating cooking appliance further comprises a driving device, wherein the driving device is connected to the wire reel assembly, or the driving device is connected to the cooking container, and is used for driving the connected wire reel assembly or the cooking container to rotate.

[0062] According to the present application, the driving device is used to rotate the cooking container relative to the magnetic field.

[0063] Optionally, the driving device comprises:

[0064] A drive assembly for providing a driving force; and

[0065] A transmission assembly is connected to the driving assembly for transmitting the driving force.

[0066] According to the present application, the driving device has a simple structure.

[0067] Optionally,

[0068] The drive assembly is configured as a motor; and / or

[0069] The electromagnetic heating cooking appliance further comprises a grounding wire, one end of which is connected to the housing of the driving assembly, and the other end of which is connected to a grounding terminal of the electromagnetic heating cooking appliance.

[0070] According to the present application, the drive assembly has simple control, stable performance and low cost. The grounding wire helps the drive assembly resist electromagnetic interference.

[0071] Optionally, the driving assembly is configured as a motor, and the transmission assembly at least includes:

[0072] A first transmission wheel, coaxially connected to the output shaft of the motor, so as to rotate under the drive of the motor; and

[0073] A second transmission wheel is connected to the connected wire tray assembly or the cooking container and is connected to the first transmission wheel.

[0074] The transmission assembly is configured such that the second transmission wheel drives the connected wire reel assembly or the cooking container to rotate synchronously under the drive of the first transmission wheel.

[0075] According to the present application, the transmission assembly has a simple structure and stable performance.

[0076] Optionally, the transmission assembly is made of non-metallic material.

[0077] According to the present application, the transmission assembly can resist electromagnetic interference.

[0078] Optionally, the electromagnetic heating cooking appliance further comprises a magnetic shielding cover, which is used to cover at least a part of the driving device to shield the alternating magnetic field.

[0079] According to the present application, the magnetic shield helps the driving device resist electromagnetic interference.

[0080] Optionally, the electromagnetic heating cooking appliance further comprises a grounding wire, one end of which is connected to the magnetic shield, and the other end of which is connected to a ground terminal of the electromagnetic heating cooking appliance.

[0081] According to the present application, the grounding wire can further improve the anti-electromagnetic interference performance of the driving device.

[0082] Optionally, the driving device is used to contact a container wall of the cooking container to drive the cooking container to rotate around a central axis of the cooking container relative to the wire reel assembly.

[0083] Furthermore, the driving device comprises:

[0084] A motor for providing driving force; and

[0085] A friction wheel is coaxially connected to the output shaft of the motor so as to rotate under the drive of the motor.

[0086] Wherein, the friction wheel is used to contact the container wall of the cooking container.

[0087] According to the present application, the drive device can directly contact the cooking container and rotate it.

[0088] Optionally, the electromagnetic heating cooking utensil is an electric rice cooker, an electric pressure cooker, an electric stew pot, an electric hot pot, an electric kettle or an induction cooker.

[0089] According to the present application, the electromagnetic heating cooking appliance includes various types.

[0090] Optionally, the wire drum assembly is constructed so that the alternating magnetic field has N strong magnetic regions and N weak magnetic regions alternatingly distributed along the circumferential direction of the wire drum assembly, wherein the magnetic field strength of the strong magnetic region is greater than the magnetic field strength of the weak magnetic region, the N strong magnetic regions are equally spaced along the circumferential direction of the wire drum assembly, and the N weak magnetic regions are equally spaced along the circumferential direction of the wire drum assembly, and N is an integer greater than or equal to 1.

[0091] According to the present application, the alternating magnetic field has N strong magnetic regions distributed at equal intervals along the circumferential direction, so that the cooking container has N hot spots distributed at equal intervals along the circumferential direction, making the heating control of the cooking container simple.

[0092] Optionally, the electromagnetic heating cooking appliance is configured such that at least a portion of the wire reel assembly and one of the cooking container is rotatable within ±180 / N degrees relative to the other.

[0093] According to the present application, the cooking container is rotated ±180 / N degrees relative to the magnetic field, so that the hot spot completely covers the entire cooking container, and the control method is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] The following drawings of the present application are used as a part of the present application for understanding the present application. The drawings show the implementation modes of the present application and the description thereof, and are used to explain the principle of the present application.

[0095] In the attached figure:

[0096] Figure 1 is a side cross-sectional schematic diagram of an electromagnetic heating cooking appliance according to a first embodiment of the present application;

[0097] Figure 2 for Figure 1The schematic diagram of the internal structure of the electromagnetic heating cooking device shown, wherein the wire reel assembly, the circuit board assembly and the driving device are shown;

[0098] Figure 3 for Figure 1 A schematic diagram of some components of an electromagnetic heating cooking device shown, wherein a driving device and a wire drum device are shown;

[0099] Figure 4 for Figure 1 An exploded schematic diagram of some components of the electromagnetic heating cooking device shown, wherein a driving device is shown;

[0100] Figure 5 for Figure 1 A schematic side cross-sectional view of some components of the electromagnetic heating cooking device shown;

[0101] Figure 6 for Figure 5 A partial magnified view of the structure at A in the middle;

[0102] Figure 7 for Figure 5 A partial magnified view of the structure at B in the middle;

[0103] Figure 8 for Figure 3 A schematic diagram of a cable drum is shown;

[0104] Fig. 9 for Figure 8 A partial magnified view of the structure at C in the middle;

[0105] Fig.10 Figure 1 A schematic diagram of some components of an electromagnetic heating cooking appliance shown, wherein a wire tray assembly, a wiring assembly and a circuit board assembly are shown;

[0106] Fig.11 is a side cross-sectional schematic diagram of an electromagnetic heating cooking appliance according to a second embodiment of the present application;

[0107] Fig.12 for Fig.11 A schematic side cross-sectional view of a portion of the internal structure of the electromagnetic heating cooking device shown, wherein a cooking container, a wire reel device and a driving device are shown;

[0108] Fig.13 for Fig.11 An exploded schematic diagram of a wire reel device of an electromagnetic heating cooking utensil shown;

[0109] Fig.14 is an exploded schematic diagram of a wire reel device of an electromagnetic heating cooking appliance according to a third embodiment of the present application;

[0110] Fig.15 is a side cross-sectional schematic diagram of an electromagnetic heating cooking appliance according to a fourth embodiment of the present application;

[0111] Fig.16 for Fig.15 A schematic side cross-sectional view of a portion of the internal structure of the electromagnetic heating cooking device shown, wherein a cooking container, a wire reel device and a driving device are shown;

[0112] Fig.17 for Fig.15 An exploded schematic diagram of a part of the internal structure of the electromagnetic heating cooking device shown, wherein a cooking container and a wire reel device are shown;

[0113] Fig.18 for Fig.15 A schematic cross-sectional view of a portion of the internal structure of an electromagnetic heating cooking device is shown, wherein the wiring method of the coiled wire of the coil device is shown;

[0114] Fig.19 for Fig.17 A bottom view of the disc shown;

[0115] Fig. 20 is a side cross-sectional schematic diagram of a cooking appliance according to a fifth embodiment of the present application;

[0116] Fig.21 for Fig. 20 A schematic diagram of a portion of the cooking appliance shown, showing a cable tray assembly and a circuit board assembly;

[0117] Fig. 22 for Fig.21 A bottom view of the cable drum assembly shown;

[0118] Fig.23 for Fig. 20 A schematic diagram of some components of the cooking appliance shown, showing a cooking container, a wire reel device and a drive device;

[0119] Fig.24 for Fig.21 A three-dimensional schematic diagram of a temperature sensor assembly is shown;

[0120] Fig.25 It is a schematic diagram of the internal structure of an electromagnetic heating cooking appliance according to a sixth embodiment of the present application, which shows a cooking container, a temperature sensor assembly, a wire reel assembly and a driving device. DETAILED DESCRIPTION

[0121] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0122] In order to thoroughly understand the present application, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other embodiments.

[0123] Ordinal numbers such as "first" and "second" cited in this application are merely identifiers and do not have any other meaning, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". The use of the words "first", "second", and "third" does not indicate any order, and these words can be interpreted as names.

[0124] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this application are for illustrative purposes only and are not limiting.

[0125] The present application provides an electromagnetic heating cooking appliance.

[0126] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0127] First embodiment

[0128] like Figure 1 As shown, in a first embodiment, an electromagnetic heating cooking utensil 100 (referred to as cooking utensil 100) according to the present application includes a cover 10 and a pot body 20. A heating device and a cooking container 30 (such as a pot) are arranged in the pot body. The cooking container 30 is used to hold food, and the heating device is used to heat the cooking container 30. The cover 10 is used to cover the pot body 20. When the cover 10 covers the pot body 20, a cooking space 31 is formed between the cover 10 and the cooking container 30. The volume of the cooking container 30 is, for example, 1L to 15L. It can be understood that the cooking container 30 includes a ferromagnetic material.

[0129] Specifically, the pot body 20 has a receiving cavity 21, and the cooking container 30 is removably arranged in the receiving cavity 21. The heating device is composed of a wire drum device 160 and a circuit board assembly 22. The pot body 20 has a base 26, which at least forms the bottom wall of the receiving cavity 21. The wire drum device 160 and the circuit board assembly 22 are both arranged on the base 26. Figure 2 As shown, the wire reel device 160 includes a coiled wire 182, which is used to form a resonant inductor of an electromagnetic heating resonant circuit, so as to generate an alternating magnetic field required for electromagnetic heating after power is turned on. The circuit board assembly 22 is used to power the coiled wire 182. The coiled wire 182 is connected to the circuit board assembly 22, for example, through a cable assembly 29. The circuit board assembly 22 is provided with, for example, a resonant capacitor used in conjunction with the coiled wire 182, a switch module (for example, a power switch tube IGBT), a control module, a power module, etc. The wire reel device 160 is arranged at the bottom of the accommodating cavity 21, and the cooking container 30 is detachably arranged in the magnetically inductive area of ​​the wire reel device 160, for example, at least above. The cooking container 30 has a central axis P3 of the cooking container. The cooking container 30 is generally in the shape of a rotating body with the central axis P3 of the cooking container as the axis.

[0130] like Figure 1 and Figure 2 As shown, the wire reel device 160 includes a wire reel assembly 170, the wire reel assembly 170 includes at least one coiled wire 182, the coiled wire 182 is used to generate an alternating magnetic field after being powered on, the wire reel assembly 170 has a wire reel assembly central axis PA, and the wire reel assembly 170 is configured so that the magnetic field strength of the alternating magnetic field is non-uniformly distributed along the circumferential direction of the wire reel assembly 170. The electromagnetic heating cooking appliance 100 is configured so that the cooking container 30 and the wire reel assembly 170 are detachably arranged at least above the wire reel assembly 170, when the cooking container 30 is located at least above the wire reel assembly 170, the cooking container central axis P3 is substantially coincident with the wire reel assembly central axis PA, and at least a portion of the wire reel assembly 170 is rotatable relative to the cooking container 30 around the wire reel assembly central axis PA. As a convertible embodiment, in specific implementation, the cooking container 30 can also be selectively made rotatable relative to at least a portion of the wire reel assembly 170 around the cooking container central axis P3. Thus, one of the alternating magnetic fields generated by the cooking container 30 and the wire reel assembly 170 is rotatable relative to the other around the wire reel assembly central axis PA, so that the heated portion of the cooking container 30 rotates on the cooking container 30 along the circumferential direction of the cooking container 30.

[0131] In the present application, two central axes substantially coincide with each other means that the distance between the two central axes is ≤3 mm, and the angle between the two central axes is ≤5°, that is, the two central axes are substantially parallel and close to each other.

[0132] It can be understood that the central axis P3 of the cooking container and the central axis PA of the wire reel assembly both extend in the height direction of the cooking appliance 100 .

[0133] In an embodiment not shown in the present application, the wire reel device 160 is used to be arranged on the side of the cooking container 30 (for example, the wire reel device 160 is configured to include a sleeve that can be sleeved on the outer circumference of the cooking container 30). Alternatively, the wire reel device 160 can also be arranged on the cover 10 (the cover 10 includes a receiving cavity for accommodating the wire reel device 160), so that the cooking container 30 and the wire reel device 160 are detachably arranged at least below the magnetically induced area of ​​the wire reel device 160. That is, in the present application, the cooking container 30 and the wire reel device 160 are detachably arranged on one side of the magnetically induced area of ​​the wire reel device 160 (that is, the coiled wire 182 and / or the magnetic field generated by it are located at least on the upper side, at least on the lower side or at least on the outer side of the cooking container 30), and the central axis P3 of the cooking container is substantially coincident with the central axis PA of the wire reel assembly.

[0134] The driving device 50 disposed on the base 26 is used to drive one of the alternating magnetic fields generated by the cooking container 30 and the wire reel assembly 170 to rotate relative to the other around the central axis PA of the wire reel assembly. As some preferred embodiments of the present application, Figure 2 As shown, the wire drum assembly 170 includes a plurality of coiled wires 182, and the plurality of coiled wires 182 are arranged at intervals along the circumferential direction of the wire drum assembly 170, so that all the coiled wires 182 do not fill the annular area with the central axis PA of the wire drum assembly as the axis. Alternatively, the wire drum assembly 170 includes only one coiled wire 182, and the winding center of the coiled wire 182 deviates from the central axis PA of the wire drum assembly. The coiled wire 182 is not concentric with the wire drum assembly 170. Thus, along the circumferential direction of the wire drum assembly 170, the magnetic field line density is large and the magnetic field strength is strong in the area where the coiled wires 182 are distributed, and the magnetic field line density is small and the magnetic field strength is weak in the area where the coiled wires 182 are not distributed. That is, the non-uniform distribution of the magnetic field strength is achieved by making the coiled wires 182 non-uniformly distributed along the circumference of the wire drum assembly 170.

[0135] It should be noted that in the present application, the number of the coiled wires 182 included in the wire reel assembly 170 is not specifically limited. In a specific implementation, the number of the coiled wires 182 included in the wire reel assembly 170 can be selectively one, two, three, four, five, six, seven, eight, nine or more than ten. Figure 2 As shown, it is preferred that the number of the disc-shaped windings 182 is three, and the three disc-shaped windings 182 are spaced apart along the circumferential direction of the wire drum assembly 170 . It is further preferred that the three disc-shaped windings 182 are equally spaced apart along the circumferential direction of the wire drum assembly 170 .

[0136] It should also be pointed out that in the present application, "at least part of the wire reel assembly is rotatable relative to the cooking container around the central axis of the wire reel assembly" includes that at least part of the wire reel assembly can rotate a full circle around the central axis PA of the wire reel assembly, and also includes that at least part of the wire reel assembly can rotate less than 360° around the central axis PA of the wire reel assembly.

[0137] As some preferred embodiments of the present application, the wire reel assembly 170 is further configured so that the alternating magnetic field has N strong magnetic regions and N weak magnetic regions that are alternately distributed along the circumferential direction of the wire reel assembly 170, wherein the magnetic field strength of the strong magnetic region is greater than the magnetic field strength of the weak magnetic region. In the illustrated embodiment, the portion of the wire reel assembly 170 corresponding to the arrangement of the disc-shaped winding 182 is a strong magnetic region, and the portion corresponding to the gap between the two disc-shaped windings 182 is a weak magnetic region. The N strong magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 170, and the N weak magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 170. Among them, the electromagnetic heating cooking utensil 100 is configured so that when the cooking container 30 is located at least above the wire reel assembly 170, at least a portion of the wire reel assembly 170 and one of the cooking container 30 can rotate ±180 / N degrees relative to the other.

[0138] It should be noted that N is any integer greater than or equal to 1; in a specific implementation, N can be optionally any value of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. It should be further pointed out that N is not limited to the values ​​listed above, and it can also be any value greater than 10. In a specific implementation, N can also be 11, 12, 13, etc.

[0139] As some preferred implementations of the present application, specifically as follows Figure 2 As shown, the wire drum assembly 170 is constructed so that the alternating magnetic field has three strong magnetic regions and three weak magnetic regions that are alternately distributed along the circumferential direction of the wire drum assembly 170 .

[0140] According to the present application, by making the wire reel assembly 170 include at least one coiled wire 182, and by making the wire reel assembly 170 rotatable relative to the cooking container 30, the effect of rotating heating of the electromagnetic heating cooking utensil 100 heat source can be achieved, and at the same time, the complex and changeable convection tumbling form and tumbling effect inside the cooking container 30 can be achieved, so that the food is heated more evenly, so as to achieve a better cooking effect, thereby improving the user experience. In particular, when the wire reel assembly 170 includes multiple coiled wires 182, the effect of rotating heating of multiple heat sources of the electromagnetic heating cooking utensil 100 heat source can be achieved, so that the food is heated more evenly and a better cooking effect is achieved.

[0141] As some preferred embodiments of the present application, the electromagnetic heating cooking appliance 100 is configured such that when the cooking container 30 is placed at least above the wire reel assembly 170, the distance between the coiled wire 182 and the cooking container 30 is any value between 3 mm and 30 mm. In a specific implementation, the distance between the coiled wire 182 and the cooking container 30 is preferably between 6 mm and 10 mm.

[0142] According to the present application, the distance between the disc winding 182 and the cooking container 30 is set between 3 mm and 30 mm to solve the problems of the magnetic field generated by the disc winding 182 covering a small area of ​​the cooking container 30 and insufficient firepower due to the distance being too large; at the same time, it can also solve the problems of high heat generation and increased energy consumption of the disc winding 182 due to the distance between the disc winding 182 and the cooking container 30 being too small.

[0143] The cable drum assembly 170 includes a cable drum 180 , which is generally configured in a disc shape and has a cable drum central axis P8 , which is also the cable drum assembly central axis PA. The disc-shaped windings 182 are arranged on the cable drum 180 at intervals along the circumferential direction of the cable drum 180 .

[0144] The coiled wire 182 is coiled around a winding center that is offset from the bobbin center axis P8 , so that the coiled wire 182 is not concentric with the bobbin 180 , and the coiled wire 182 is not concentric with the bobbin assembly 170 .

[0145] In the illustrated embodiment, the driving device 50 is used to drive the wire coiling rack 180 to rotate relative to the pot body 20 (i.e., the cooking container 30) around the central axis PA of the wire coil assembly, so that the wire coil assembly 170 rotates relative to the pot body 20 (i.e., the cooking container 30) around the central axis PA of the wire coil assembly. In the present application, the wire coiling rack 180 is also referred to as a turntable 180. It should be noted that the driving device 50 in the present application is not specifically limited, and it can be any device that can drive the wire coil assembly 170 (specifically, the wire coiling rack 180) to rotate.

[0146] The wire drum assembly 170 may further include at least one wire drum support 183 and at least one magnetic conductive member 185. The wire drum support 183 is connected to the wire drum frame 180 and protrudes from the surface of the wire drum frame 180. The wire drum support 183 has a winding center, which is offset from the central axis P8 of the wire drum frame. The coiled wire 182 is coiled around the winding center on the surface of the wire drum frame 180. The magnetic conductive member 185 is disposed on the wire drum support 183, and at least a portion of the magnetic conductive member 185 extends along the magnetic lines of force of the magnetic field of the coiled wire 182, thereby focusing the magnetic lines of force of the magnetic field of the coiled wire 182.

[0147] Preferably, the wire reel assembly 170 includes a plurality of wire reel supports 183, for example, the wire reel assembly 170 includes 2 to 8 wire reel supports 183, and the plurality of wire reel supports 183 are arranged at intervals on the wire reel rack 180 along the circumferential direction of the wire reel rack 180, for example, the plurality of wire reel supports 183 are arranged at equal intervals on the wire reel rack 180 along the circumferential direction of the wire reel rack 180. The wire reel assembly 170 may include a plurality of wire reel supports 183, thereby including a plurality of coiled wires 182. At least part of the plurality of coiled wires 182 may be formed by winding an enameled wire; or, each coiled wire 182 may be formed by winding different enameled wires. A certain gap needs to be preset between two adjacent coiled wires 182, otherwise electromagnetic self-interference will occur, resulting in undesirable phenomena such as large reverse pressure, low inductance, small heating power, large storage current, and messy heating waveform.

[0148] Specifically, Figure 3 and Figure 4 As shown, the base 26 has an upwardly protruding support member 162, and the wire drum 180 is mounted on the support member 162. The driving device 50 is used to drive the wire drum 180 to rotate relative to the support member 162 around the central axis PA of the wire drum assembly.

[0149] The driving device 50 may selectively include a driving assembly 51 and a transmission assembly 55. The driving assembly 51 is used to provide a driving force for rotating the wire coiling rack 180 relative to the support member 162, and the transmission assembly 55 is connected between the driving assembly 51 and the wire coiling rack 180 to transmit the driving force to the wire coiling rack 180. That is, the driving assembly 51 is transmission-connected to the wire coiling rack 170 via the transmission assembly 55, and under the drive of the driving assembly 51, the wire coiling rack 170 can rotate relative to the cooking container 30 around the wire coiling rack central axis PA.

[0150] The drive assembly 51 is configured as a motor, for example. The motor 51 is, for example, a stepper motor, so as to provide power for the forward and reverse rotation of the wire drum assembly 170. The motor 51 is electrically connected to the control module of the circuit board assembly 22 to work under the control of the control module. The control module can realize the forward and reverse rotation and intermittent rotation of the turntable 180 by controlling the motor 51, and the speed and stroke are adjustable. The speed range of the turntable 180 is, for example, 1r / min to 350r / min, preferably 4r / min to 6r / min.

[0151] The transmission assembly 55 includes, for example, a first transmission wheel 57 and a second transmission wheel 58, wherein the first transmission wheel 57 and the second transmission wheel 58 are both configured as gears for meshing transmission. The first transmission wheel 57 is further connected to the motor shaft 59 (motor output shaft) of the motor 51, and the second transmission wheel 58 is connected to the wire reel 180. When the motor 51 is powered, the motor 51 can drive the wire reel 180 to rotate through the first transmission wheel 57 and the second transmission wheel 58, and finally the wire reel assembly 170 rotates.

[0152] It should be noted that the first transmission wheel 57 and the second transmission wheel 58 can be selectively configured as one of a gear, a roller, a sprocket, a pulley, a friction wheel, etc. Preferably, both the first transmission wheel 57 and the second transmission wheel 58 are configured as gears.

[0153] As some preferred embodiments of the present application, Figure 4 As shown, the electromagnetic heating cooking appliance 100 further includes a magnetic shield 52, which is made of metal material and is used to cover at least part of the driving device 50 (for example, the motor 51) to shield the magnetic field generated by the disc winding 182. For example, the motor 51 is mounted on the base 26 of the pot body 20 by two bolts 54, and the magnetic shield 52 can be simultaneously mounted to the base 26 by the two bolts 54, so that the housing of the motor 51 contacts the magnetic shield 52. The magnetic shield 52 is provided with an axial hole 56 for the motor shaft 59 to pass through.

[0154] As some preferred embodiments of the present application, the electromagnetic heating cooking appliance 100 further includes a grounding wire 53, one end of which is connected to the magnetic shield 52 and / or the housing of the motor 51 (for example, fixed to the magnetic shield 52 by bolts 54), and the other end of the grounding wire 53 is connected to the grounding terminal of the electromagnetic heating cooking appliance 100, such as the grounding terminal on the circuit board assembly 22 or the grounding terminal on the power socket 27. Under the action of the grounding wire 53, the housing of the motor 51 and the magnetic shield 52 are grounded together, which can also effectively improve the magnetic shielding effect of the magnetic shield 52.

[0155] In order to achieve a better magnetic isolation effect, the motor shaft 59 can be further selectively made of non-metallic materials. Of course, the motor shaft 59 can also be made of metal materials. In addition, the transmission assembly 55 (first transmission wheel 57, second transmission wheel 58, etc.) included in the drive device 50 can also be made of non-metallic materials.

[0156] The structure of the cable drum device 160 will be described below.

[0157] like Figure 5 and Figure 6 As shown, the cable drum device 160 includes a support member 162 and a cable drum assembly 170. The support member 162 is disposed on the base 26, and the cable drum assembly 170 is disposed on the support member 162. Specifically, the cable drum frame 180 of the cable drum assembly 170 is connected to the support member 162 and is rotatable relative to the support member 162 around the central axis PA of the cable drum assembly. It should be noted that the present application does not impose any specific restrictions on the structure of the support member 162, and it can be any structural form that meets the installation requirements of the cable drum assembly 170.

[0158] The cable drum device 160 may further include a temperature sensor assembly 40. The temperature sensor assembly 40 is disposed on the support 162 and is used to contact the cooking container 30 to sense the bottom temperature of the cooking container 30. For example, the support 162 includes a receiving space 162A, and the temperature sensor assembly 40 is disposed in the receiving space 162A and is exposed from the surface of the support 162 to contact the cooking container 30. The support 162 includes a support first end 163 and a support second end 164 that are oppositely disposed along the axial direction of the cable drum assembly 170, the support first end 163 being on the top and the support second end 164 being on the bottom. The temperature sensor assembly 40 is exposed from the support first end 163, and the support second end 164 is provided with a wire outlet (not shown) for leading out the cable 42 of the temperature sensor assembly 40.

[0159] The wire coiling rack 180 is, for example, sleeved on the outer circumference of the support member 162. The coiled wire 182 is disposed on one side of the wire coiling rack 180 facing the second end portion 164 of the support member. The wire coil support 283 is connected to one side of the wire coiling rack 180 facing the second end portion 164 of the support member.

[0160] In a specific implementation, a cylindrical portion 180C is provided at the central portion or approximately the central portion of the wire coiling frame 180. The cylindrical portion 180C has a cylindrical portion first end 180X and a cylindrical portion second end 180Y which are arranged oppositely along the axial direction of the wire coiling frame 180. The first end 180X of the cylindrical portion 180C is connected to the central portion of the wire coiling frame 180, and the second end 180Y of the cylindrical portion 180C extends in a direction away from the wire coiling frame 180. The central axis of the cylindrical portion 180C coincides with the central axis P8 of the wire coiling frame. A wire coil through hole 180J extending along the axial direction of the wire coiling frame 180 is formed inside the cylindrical portion 180C. At least a portion of the support member 162 is arranged in the wire coil through hole 180J. The first end 163 of the support member and the second end 164 of the support member can also be understood as being arranged oppositely along the axial direction of the cylindrical portion 180C. The support member first end portion 163 corresponds to the first end 180X of the cylindrical portion, and the support member second end portion 164 corresponds to the second end 180Y of the cylindrical portion.

[0161] The support member 162 is adapted to the wire drum through hole 180J, so that the wire drum frame 180 can rotate around the central axis PA of the wire drum assembly relative to the support member 162. For example, the side wall of the wire drum through hole 180J is connected to the side wall of the support member 162 through a swivel substructure 161, wherein the axis of the swivel substructure 161 coincides with the central axis PA of the wire drum assembly. The swivel substructure 161 can be selectively configured as a rolling bearing, so that the inner ring of the rolling bearing 161 is tightly matched with the outer peripheral surface of the support member 162, and the outer ring of the rolling bearing 161 is tightly matched with the inner peripheral surface of the wire drum through hole 180J. As a convertible embodiment, the swivel substructure 161 can also be selectively configured as a sliding sleeve. In order to prevent electromagnetic interference, the swivel substructure 161 is further selectively made of non-metallic material.

[0162] In a specific implementation, the cylindrical portion 180C and the cable reel 180 may be selectively formed into an integrated structure, or the first end of the cylindrical portion 180C may be selectively connected to the cable reel 180 by bonding, welding, threaded connection, or the like.

[0163] Further, the outer periphery of the support member 162 is selectively formed with an annular groove 162F for accommodating the rotary auxiliary structure 161. In specific implementation, the rolling bearing 161 is sleeved in the annular groove 162F. As some preferred embodiments of the present application, Fig.13 and Fig.14 As shown, the support member 162 includes a first support member 162D and a second support member 162E. The first support member 162D is arranged at the first end 163 of the support member. The second support member 162E is arranged at the second end 164 of the support member and is connected (e.g., clamped, threaded, etc.) to the first support member 162D. One end 162G of the first support member 162D for connecting to the second support member 162E has a first outer diameter, one end 162H of the second support member 162E for connecting to the first support member 162D has a second outer diameter, and one end 162I of the second support member 162E away from the first support member 162D has a third outer diameter, the first outer diameter is greater than the second outer diameter, and the third outer diameter is greater than the second outer diameter, so that the portion 162H corresponding to the second outer diameter forms a clamping groove 162F. The rotary auxiliary structure 161 is arranged at the portion 162H of the second support member 162E having the second outer diameter.

[0164] The first support member 162D and the second support member 162E are both constructed as hollow structures to form a receiving space 162A. The outlet of the cable 42 is arranged on the second support member 162E. Along the axial direction of the cable drum assembly 170, the rotary substructure 161 is closer to the first end 163 of the support member than the outlet, so that the position of the outlet avoids the cable drum assembly 170, and the cable 42 has no effect on the rotation of the cable drum assembly 170.

[0165] The inner circumferential surface of the wire coil through hole 180J has a blocking surface 180M extending toward the cylindrical portion 180C in the radial direction of the wire coil through hole 180J, and the blocking surface 180M is used to contact the side of the swivel substructure 161 facing the first end portion 163 of the support member. Thus, the swivel substructure 161 can support the cylindrical portion 180C in the height direction of the cooking appliance 100, and further support the wire coil rack 180 and the wire coil assembly 170.

[0166] For example Figure 6 and Figure 7 As shown, the cable drum device 160 further includes a first blocking member 165, which is disposed at the first end of the support member, and includes a first blocking portion 165A extending outwardly in the radial direction of the cable drum assembly 170 to block the cable drum frame 180 from moving in the axial direction of the cable drum assembly 170 in a direction away from the second end 164 of the support member. The first blocking member 165 further includes a first connecting portion 165B, which is connected to the first blocking portion 165A, and the first connecting portion 165B is used to connect the first end 163 of the support member. The first connecting portion 165B is configured as a sleeve extending in the axial direction of the cable drum assembly 170, the sleeve is sleeved on the outer periphery of the first end 163 of the support member, and the sleeve is sleeved on the outer periphery of the first support member 162D.

[0167] A through hole is provided at an end of the first blocking member 165 corresponding to one end of the first connecting portion 165B connected to the first blocking portion 165A (the upper end of the first blocking member 165 in the figure) for exposing the temperature sensor assembly 40 .

[0168] When the cooking container 30 is placed in the pot body 20, in order to protect the temperature sensor assembly 40, the temperature sensor assembly 40 includes a spring 41 extending in the axial direction of the wire disc assembly 170. Fig.14 As shown, in order to protect the temperature sensor assembly 40 from being separated from the accommodation space 162A, the support member 162 is provided with a first additional blocking portion 167G and a second additional blocking portion 167H spaced apart along the axial direction of the wire drum assembly 170, so as to limit at least part of the temperature sensor assembly 40 between the first additional blocking portion 167G and the second additional blocking portion 167H. For example, the upper end surface of the first support member 162D forms the first additional blocking portion 167G, and the convex rib inside the second support member 162E forms the second additional blocking portion 167H, and the spring 41 of the temperature sensor assembly 40 is limited between the first additional blocking portion 167G and the second additional blocking portion 167H along the axial direction of the wire drum assembly 570.

[0169] The drive device 50 is connected to the cylindrical portion 180C. Figure 8 and Fig. 9As shown in some preferred embodiments of the present application, the outer peripheral surface of the cylindrical portion 180C is further selectively provided with a connection structure 187 for connecting the drive device 50. The connection structure 187 for connecting the drive device 50 in the present application is not specifically limited, and it can be any structure that can connect the drive device 50 and rotate the wire drum assembly 170 (specifically, the wire drum frame 180).

[0170] As some examples under some of the aforementioned embodiments, the connection structure 187 may selectively include the second transmission wheel 58 (the transmission assembly 55 only includes the first transmission wheel 57). For example, the second transmission wheel 58 is integrally formed or connected to the connection structure 187, and the second transmission wheel 58 is connected to the cylindrical portion 180C. For example, the second transmission wheel 58 is integrally formed with the cylindrical portion 180C, and the axis of the second transmission wheel 58 coincides with the central axis of the cylindrical portion 180C. Thus, the connection structure 187 is used to connect with the first transmission wheel 57 of the driving device 50.

[0171] As a convertible embodiment, the driving device 50 can selectively include a second transmission wheel 58, and the connecting structure 187 is used to connect the second transmission wheel 58. When the second transmission wheel 58 is connected to the connecting structure 187, the axis of the second transmission wheel 58 coincides with the central axis of the cylindrical portion 180C. The second transmission wheel 58 is an annular structure, which is used to be sleeved on the outer periphery of the cylindrical portion 180C. The connecting structure 187 is provided on the outer peripheral surface of the cylindrical portion 180C, and is used to connect the second transmission wheel 58.

[0172] The connection structure 187 includes a first limit stop surface 180I. The first limit stop surface 180I extends outward from the outer peripheral surface of the cylindrical portion 180C along the radial direction of the cylindrical portion 180C and toward the second end 180Y of the cylindrical portion 180C, and is used to limit the second transmission wheel 58 from moving toward the wire coiling frame 180 along the axial direction of the cylindrical portion 180C. In a specific implementation, an annular convex rib is provided in the middle of the outer side of the cylindrical portion 180C, and the surface of the annular convex rib facing the second end of the cylindrical portion 180C is the first limit stop surface 180I. The present application can limit the axial position of the second transmission wheel 58 by making the connection structure include the first limit stop surface 180I to prevent the second transmission wheel 58 from moving toward the wire coiling frame 180.

[0173] As some preferred embodiments of the present application, the inner circumferential surface of the second transmission wheel 58 may be selectively provided with at least one second connecting body 58F (see Figure 4), the connection structure 187 includes at least one first connection body 180D, the first connection body 180D is used to be arranged corresponding to the second connection body 58F and connected to the second connection body, and the first connection body 180D is closer to the second end 180Y of the cylindrical portion 180C than the first limit stop surface 180I. When the second transmission wheel 58 is installed to the set position, the first connection body 180D is engaged with the second connection body 58F to limit the second transmission wheel 58 from rotating relative to the connection structure 187, so that the cylindrical portion 180C can rotate synchronously with the second transmission wheel 58.

[0174] In a specific implementation, a plurality of second connectors 58F may be provided at intervals on the inner circumferential surface of the second transmission wheel 58, and the connection structure 187 may include a plurality of first connectors 180D corresponding to the second connectors 58F and provided at intervals along the circumferential direction of the cylindrical portion 180C. It should be noted that the number of the second connectors 58F provided on the inner circumferential surface of the second transmission wheel 58 is not specifically limited, and may be selectively provided according to actual needs.

[0175] As some preferred embodiments under the aforementioned embodiments, the first connecting body 180D is further made into a convex rib provided on the outer peripheral surface of the cylindrical portion 180C, and the second connecting body 58F is a limiting groove provided on the inner peripheral surface of the second transmission wheel 58, and the limiting groove 58F extends along the axial direction of the second transmission wheel 58, and the limiting groove 58F is used to accommodate the convex rib 180D. As some alternative embodiments, the second connecting body 58F can also be selectively made into a convex rib provided on the inner peripheral surface of the second transmission wheel 58, and the first connecting body 180D is a limiting groove provided on the outer peripheral surface of the cylindrical portion 180C, and the limiting groove extends along the axial direction of the cylindrical portion 180C, and the limiting groove is used to accommodate the convex rib on the inner peripheral surface of the second transmission wheel 58.

[0176] The present application can quickly fix the second transmission wheel 58 to the cylindrical portion 180C by providing the rib 180D and the limiting groove 58F, which can effectively improve the assembly efficiency of the second transmission wheel 58. In addition, under the action of the rib 180D and the limiting groove 58F, the second transmission wheel 58 can also drive the cable drum 180 to rotate during the rotation process.

[0177] As some preferred embodiments of the present application, the connection structure 187 may further include at least one limiting guide structure 180E. The limiting guide structure 180E is disposed on the outer circumferential surface of the cylindrical portion 180C, and the side of the limiting guide structure 180E facing the first end 180X of the cylindrical portion 180C includes a second limiting stop surface 180K, the second limiting stop surface 180K extends outward from the outer circumferential surface of the cylindrical portion 180C along the radial direction of the cylindrical portion 180C, and the second limiting stop surface 180K is closer to the second end 180Y of the cylindrical portion 180C than the first limiting stop surface 180I. In specific implementation, the connection structure 187 may further selectively include a plurality of limiting guide structures 180E, and the plurality of limiting guide structures 180E are spaced apart along the circumferential direction of the cylindrical portion 180C.

[0178] As a preferred embodiment under some of the aforementioned embodiments, Fig. 9 As shown, the position limiting guide structure 180E has a guide slope 180H located on the side facing away from the cylindrical portion 180C, and the guide slope 180H is configured to be inclined relative to the axis of the cylindrical portion 180C, so that the distance between the end of the guide slope 180H facing the second end 180Y of the cylindrical portion 180C and the axis of the cylindrical portion 180C is smaller than the distance between the end of the guide slope 180H facing the first end 180X of the cylindrical portion 180C and the axis of the cylindrical portion 180C. The parts of the cylindrical portion 180C located on both sides of the position limiting guide structure 180E along the circumferential direction of the cylindrical portion 180C are configured as functional grooves 180L extending along the axial direction of the cylindrical portion 180C, and the functional grooves 180L penetrate the side wall of the cylindrical portion 180C.

[0179] It should be pointed out that the structure of the position-limiting guide structure 180E in the present application is not specifically limited, and it can be any structure that can play a guiding role when installing the second transmission wheel 58 and a limiting role after the second transmission wheel 58 is installed in place. Similarly, the number of position-limiting guide structures 180E included in the connection structure 187 is also not specifically limited, and it can be selectively set according to actual needs. The number of position-limiting guide structures 180E included in the connection structure 187 can be selectively made to be two, three, four, five or more than six. For example, the connection structure 187 includes four position-limiting guide structures 180E, and the four position-limiting guide structures 180E are arranged at equal intervals along the circumferential direction of the cylindrical portion 180C.

[0180] According to the present application, by providing a plurality of position limiting guide structures 180E, the second transmission wheel 58 can be guided at multiple points, which is helpful for the rapid installation of the second transmission wheel 58. Secondly, by providing a guiding slope 180H on the position limiting guide structure 180E, the second transmission wheel 58 can be quickly connected to the cylindrical portion 180C under the action of the guiding slope 180H. In addition, by providing functional grooves 180L penetrating the cylindrical portion 180C on both sides of the position limiting guide structure 180E, when the second transmission wheel 58 is installed, the position limiting guide structure 180E in a cantilever state will be displaced toward the center of the cylindrical portion 180C, so that the second transmission wheel 58 can be more easily installed to the set position.

[0181] It should be pointed out that the second transmission wheel 58 in the present application is not specifically limited, and it can be any wheel body that can realize power transmission.

[0182] like Fig.10 As shown, the wire reel assembly 170 may include at least one first enameled wire 189, and the first enameled wire 189 is used to be coiled into a coiled wire 182. The first enameled wire 189 includes a coiling portion 182A and two terminal portions 182B. The coiling portion 182A is wound on the coiling frame 180 to form an effective resonant inductance of the electromagnetic heating resonant circuit. The two terminal portions 182B are portions of the first enameled wire 189 that are not used to form an effective resonant inductance, and the coiling portion 182A is located between the two terminal portions 182B. The terminal portion 182B is connected to the circuit board assembly 22 through the cable assembly 29.

[0183] The coiled wire 182 is disposed on one side of the coil frame 180 facing the second end 180Y of the cylindrical portion 180C, and at least a portion of the terminal portion 182B is routed along the outer peripheral surface of the cylindrical portion 180C. For example, at least one first bundling member 180P is disposed on the outer peripheral surface of the cylindrical portion 180C, and is used to gather all the terminal portions 182B to the outer peripheral surface of the cylindrical portion 180C, so that at least a portion of the terminal portion 182B is routed along the outer peripheral surface of the cylindrical portion 180C. It should be noted that the number of first bundling members 180P disposed on the cylindrical portion 180C is not specifically limited, and it can be selectively disposed according to the length of the cylindrical portion 180C. For example, a plurality of first bundling members 180P are provided on the cylindrical portion 180C, and the plurality of first bundling members 180P are spaced apart along the axial direction of the cylindrical portion 180C so that at least a portion of the terminal portion 182B is wired along the axial direction of the cylindrical portion 180C on the outer peripheral surface of the cylindrical portion 180C.

[0184] Preferably, the wire coiling rack 180 has a radially symmetrical structure. The axial cross-section of the wire coiling rack 180 is a C-shaped structure, which can increase the relative area between the wire coiling rack 180 and the cooking container 30, and then increase the area of ​​the heating area of ​​the wire coil assembly 170 for the cooking container 30. The wire coil support 183 and the coiled wire 182 are arranged on the outer side 180B of the C-shaped structure (that is, the lower side of the wire coiling rack 180 when actually used). The cooking container 30 is located on the inner side 180A of the C-shaped structure (that is, the upper side of the wire coiling rack 180 when in use).

[0185] In the illustrated embodiment, the cooking utensil 100 is an electric rice cooker. Based on the wire reel device 160 of the present application, the cooking utensil 100 may also be an electric pressure cooker, an electric stew pot, an electric hot pot, an electric kettle (health kettle) or an induction cooker (including a stove and a cooking container).

[0186] Second embodiment

[0187] The following only introduces the differences between the electromagnetic heating cooking appliance 300 (referred to as the cooking appliance 300 ) according to the second embodiment of the present application and the cooking appliance 100 .

[0188] exist Figures 11 to 13 In the second embodiment shown, the reel device 360 ​​and the driving device 350 of the cooking appliance 300 are different from those of the first embodiment.

[0189] Specifically, Fig.12 As shown, the wire drum device 360 ​​includes a support member 162 , a wire drum assembly 370 , a rotary substructure 161 , a first blocking member 365 , a second blocking member 366 , a second transmission wheel 58 and a temperature sensor assembly 40 .

[0190] The wire reel assembly 370 is disposed on the support member 162. The wire reel assembly includes a coiled wire 382, ​​a wire reel frame 380 and a rotating disk 390 (also referred to as a disk body 390).

[0191] The coiled wire 382 is connected to the support member 162. The coiled wire 382 is spirally wound around the central axis PA of the coil assembly (see Fig.13) Thus, a radially symmetric structure with the central axis PA of the coil spool assembly as the axis is formed. For example, in the illustrated embodiment, in the projection of the coil spool assembly 370 along the extension direction of the central axis PA of the coil spool assembly, the disk-shaped winding 382 forms an annular region or a circular region with the central axis PA of the coil spool assembly as the center. The coil spool 380 is connected to the support member 162, and the disk-shaped winding 382 is spirally wound around the surface of the coil spool 380 around the central axis PA of the coil spool assembly. The disk-shaped winding 382 is formed by winding an enameled wire, for example. The wire diameter of the enameled wire is, for example, 2 mm to 2.5 mm. The disk-shaped winding 382 can be fixed to the surface of the coil spool 380 by fixing members, so that the installation method of the disk-shaped winding 382 is simple. The disk-shaped winding 382 is connected to the support member 162 through the coil spool 380. The coil spool 380 has a coil spool central axis P8, and the coil spool central axis P8 coincides with or substantially coincides with the central axis PA of the coil spool assembly. The coil spool 380 is made of a non-metallic material (such as resin, plastic, etc.), so as not to affect the magnetic field of the disk-shaped winding 382.

[0192] The axial direction of the coil spool 380 is also the axial direction of the coil spool device 360. The circumferential direction of the coil spool 380 is also the circumferential direction of the coil spool device 360.

[0193] The turntable 390 includes a disk body 393, and the disk body 393 includes a geometric central axis P9, and the geometric central axis P9 coincides with or substantially coincides with the central axis PA of the coil spool assembly. The disk body 393 is connected to the support member 162 and is spaced apart from the coil spool 380 along the axial direction of the coil spool assembly 370, so as to be spaced apart from the disk-shaped winding 382. The coil spool device 360 is configured such that the support member 162 is rotatable relative to the coil spool 380 around the central axis PA of the coil spool assembly, that is, rotatable relative to the disk-shaped winding 382. Thus, the disk body 393 is rotatable relative to the coil spool 380 around the central axis PA of the coil spool assembly, that is, rotatable relative to the disk-shaped winding 382. The disk body 393 is alternately divided into a first region 391 and a second region 392 along the circumferential direction of the coil spool assembly 370, or rather, the turntable 390 includes at least one first region 391 and at least one second region 392 arranged correspondingly, and the first region 391 and the second region 392 are alternately arranged along the circumferential direction of the coil spool assembly 370 on the disk body 393. Among them, the first region 391 includes a medium different from the disk body 393, and the second region 392 is entirely made of the material of the disk body 393, so that the magnetic field intensity of the alternating magnetic field generated by the disk-shaped winding 382 at the first region 391 is different from that at the second region 392, thereby forming an alternating magnetic field that is non-uniformly distributed along the circumferential direction of the coil spool assembly 370.

[0194] The disk body 393 is made of a first material, such as a metal having a magnetic permeability of less than or equal to 10 B / H. The first region 391 is provided with at least one opening 394 for allowing the magnetic lines of force of the alternating magnetic field generated by the disc-shaped winding 382 to pass through. Since the first material is a metal with low magnetic permeability, very few magnetic lines of force pass through the second region 392 of the disk body 390, so that on the side of the coil rack 380 opposite to the disc-shaped winding 382, ​​the magnetic lines of force of the alternating magnetic field in the first region 391 are more than those in the second region 392, so that the magnetic field strength at the first region 391 is greater than the magnetic field strength at the second region 392, and a strong magnetic region is formed at the first region 391, and a weak magnetic region is formed at the second region 392.

[0195] The heating temperature of the portion corresponding to the strong magnetic area of ​​the cooking container 30 is high, and the heating temperature of the portion corresponding to the weak magnetic area is low. The disk body 393 can rotate relative to the coiling rack 380, and thus can rotate relative to the cooking container 30. When the disk body 393 rotates, the strong magnetic area and the weak magnetic area rotate, that is, the magnetic field and the cooking container 30 rotate relative to each other, and the high-heat portion and the low-heat portion of the cooking container 30 move along the circumferential direction of the cooking container 30. The convection direction between the hot and cold areas inside the cooking container 30 is continuously changed by the movement, which is conducive to the food in the cooking container 30 to fully roll and be evenly heated.

[0196] Preferably, the area of ​​a single opening 394 is 28 mm 2 Up to 5024mm 2 The area of ​​all openings 394 accounts for 10% to 70% of the area of ​​the disk body 393. The area here refers to the area corresponding to the surface area of ​​one side of the disk body 393. The area of ​​the disk body 393 is the surface area of ​​one side when the disk body 393 does not have a through hole or a notch, that is, the area of ​​the complete disk surface. The thickness of the disk body 393 is 0.4 mm to 2 mm.

[0197] The turntable 390 may include a plurality of (e.g., 2 to 5) first regions 391 and a plurality of second regions 392. Preferably, the plurality of first regions 391 are evenly spaced along the circumferential direction of the wire reel assembly 370, and the plurality of second regions 392 are evenly spaced along the circumferential direction of the wire reel assembly 370. For example, the wire reel assembly 370 is configured such that the alternating magnetic field has N strong magnetic regions and N weak magnetic regions (N is an integer greater than or equal to 1) that are alternately distributed along the circumferential direction of the wire reel assembly 370, the N strong magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 370, and the N weak magnetic regions are evenly spaced along the circumferential direction of the wire reel assembly 370. Preferably, the cooking utensil 300 may be configured such that when the cooking container 30 is located at least above the wire reel assembly 370, at least a portion of the wire reel assembly 370 (e.g., the turntable 390) can rotate relative to the cooking container 30 by ±180 / N degrees. In the illustrated embodiment, the turntable 390 includes three first areas 391 and three second areas 392 that are equally spaced, and the turntable 390 can rotate ±60 degrees relative to the cooking container 30. Of course, the turntable 390 can rotate at a greater angle (preferably an angle that is an integer multiple of ±180 / N degrees, and the upper limit of the rotation angle is not limited) relative to the cooking container 30, but it needs to rotate at least ±180 / N degrees to ensure that the cooking container 30 is evenly heated.

[0198] The multiple first regions 391 can be constructed to be the same or different, for example, the openings 394 of each first region 391 have different shapes, different numbers, and different total areas. There is a first distance between two adjacent openings 394 of each first region 391. Two adjacent first regions 391 have two openings 394 that are closest to each other, and there is a second distance between these two openings 394. The maximum value of the first distance is smaller than the second distance, that is, the distance between the openings 394 of two adjacent first regions 391 is significantly larger than the distance between two adjacent openings 394 inside the first region 391, so that the turntable 390 can form a clear first region 391 and a second region 392, and accordingly, the alternating magnetic field can form a clear strong magnetic region and a weak magnetic region.

[0199] Since the coiled wire 382 generates a large amount of heat after being energized, the opening 394 also helps to dissipate the heat of the coiled wire 382 .

[0200] It can be understood that there is air in the opening 394. With respect to the magnetic field of the disc winding 382, ​​the air and the first material (metal with low magnetic permeability) of the disc body 393 are two different media.

[0201] The axial direction of the rotating disk 390 is also the axial direction of the wire drum device 360, that is, the axial direction of the disk body 393. The circumferential direction of the rotating disk 390 is also the circumferential direction of the wire drum device 360, that is, the circumferential direction of the disk body 393.

[0202] The wire coiling rack 380 and the disk body 393 extend substantially parallel to each other, so that the turntable 390 can better act on the magnetic field generated by the coiled wire 382. Preferably, the wire coiling rack 380 and the disk body 393 both have radially symmetrical structures, so as to facilitate processing and better match the cooking container 30 which is also radially symmetrical. Preferably, the axial cross-sections of the wire coiling rack 380 and the disk body 393 are both C-shaped structures, so that the coiled wire 382 can surround the side wall of the cooking container 30. In the present application, the wire coiling rack 380 is used to be arranged outside the C-shaped structure of the disk body 393, that is, the wire coiling rack 380 is used at least below the disk body 393 along the height direction of the cooking utensil 300. The coiled wire 382 is arranged outside the C-shaped structure of the wire coiling rack 380, that is, the surface of the wire coiling rack 380 on the side facing away from the disk body 393. In the working state, the distance between the disc body 393 and the disc-shaped winding 382 is 3.5 mm to 10 mm, that is, the gap between the disc body 393 and the disc-shaped winding 382 is 3.5 mm to 10 mm.

[0203] The support member 162 is, for example, generally cylindrical. The support member 162 includes a support member first end 163 and a support member second end 164 that are arranged oppositely in the axial direction of the wire drum assembly 370. In the working state, the support member first end 163 is located above the support member second end 164. The wire drum frame 380 is connected to the support member second end 164, and the drum body 393 is connected to the support member first end 163. The wire drum device 360 ​​is configured so that the drum body 393 rotates synchronously with the support member second end 164 (i.e., the support member 162) around the central axis PA of the wire drum assembly, so as to be rotatable relative to the wire drum frame 380.

[0204] A disk body connection portion 399 is provided at the central portion or approximately the central portion of the disk body 393, and is used to connect the disk body 390 to the support member 162 of the electromagnetic heating cooking device 300. The disk body connection portion 399 includes a circular hole with the geometric center axis P9 as the axis. Thus, the disk body 393 is sleeved on the outer periphery of the first end portion 163 of the support member. The disk body 393 is connected to the first end portion 163 of the support member by, for example, bonding, clamping, or screwing.

[0205] A wire coil through hole 389A extending in the axial direction of the wire coil 380 is provided at the central part or approximately at the central part of the wire coil 380, and the support member 162 is provided in the wire coil through hole 389A. For example, a cylindrical portion 389C extending in the axial direction of the wire coil 380 is provided at the central part of the wire coil 380, and the wire coil through hole 389A is formed inside the cylindrical portion 389C, and the solid part of the cylindrical portion 389C is the side wall 389L of the wire coil through hole 389A (the side wall 389L of the wire coil through hole 389A is also the side wall of the cylindrical portion 389C). The central axis of the cylindrical portion 389C coincides with the central axis PA of the wire coil assembly. The support member 162 is adapted to the wire coil through hole 389A, so that the support member 162 can rotate relative to the wire coil 380 around the central axis PA of the wire coil assembly. For example, the wire drum device 360 ​​further includes a swivel substructure 161, and the side wall 389L of the wire drum through hole 389A is connected to the outer peripheral surface of the second end portion 164 of the support member through the swivel substructure 161, wherein the axis of the swivel substructure 161 coincides with the central axis PA of the wire drum assembly.

[0206] For example, the side wall 389L of the through hole of the wire drum is connected to the outer peripheral surface of the second end 164 of the support member through the revolving substructure 161. The side wall 389L of the through hole of the wire drum is connected to the outer ring of the revolving substructure 161, and the second end 164 of the support member is tightly matched with the inner ring of the revolving substructure 161, so that the cylindrical portion 389C can stably rotate relative to the support member 162, so that the wire drum frame 380 can stably rotate relative to the support member 162. The revolving substructure 161 is configured as a rolling bearing or a sliding sleeve, for example. Preferably, the revolving substructure 161 is made of non-metallic material (such as resin, plastic) so as not to interfere with the magnetic field of the disc winding 382.

[0207] The wire drum device 360 ​​further includes a second blocking member 366, which is disposed at the second end portion 164 of the support member. The second blocking member 366 includes a second blocking portion 366A extending outwardly in the radial direction of the wire drum assembly 370. The outer peripheral surface of the support member 162 includes a blocking surface 369C extending toward the side wall 389L in the radial direction of the wire drum assembly 370, and / or the inner peripheral surface of the wire drum through hole 389A includes a blocking surface 389D extending toward the support member 162 in the radial direction of the wire drum assembly 370, and the wire drum device 360 ​​is configured so that the rotary auxiliary structure 161 is limited between the blocking surface 369C (and / or 389D) and the second blocking portion 366A along the axial direction of the wire drum assembly 370.

[0208] When the wire coil device 360 ​​is placed in the accommodating cavity 21 of the pot body 20, the outer peripheral edge of the wire coil rack 380 is connected to the cavity wall of the accommodating cavity 21 (see Fig.11), so that the wire drum frame 380 is supported by the pot body 20. In order to rotate the support member 162, the wire drum device 360 ​​further includes a second transmission wheel 58, which is connected to the support member 162 (for example, it is sleeved on the outer periphery of the support member 162 and engaged with the support member 162 through splines and keyways), and is used to drive the support member 162 to rotate relative to the wire drum frame around the central axis PA of the wire drum assembly under the drive of the driving device 350. In order to allow the driving device 350 to contact the second transmission wheel 58, the second blocking member is provided with an opening 369F, and / or the side wall 389L of the wire drum through hole 389A is provided with an opening 389E, which is used to expose the second transmission wheel 58.

[0209] Specifically, the second transmission wheel 58 is arranged between the rotary substructure 161 and the blocking surface 369C (and / or 389D) along the axial direction of the wire drum assembly 370. Part of the second blocking portion 366A is connected between the rotary substructure 161 and the side wall 389L of the wire drum through hole 389A along the radial direction of the wire drum assembly 370, so that there is a gap in the radial direction between the rotary substructure 161 and the side wall 389L, so that the second transmission wheel 58 can exceed the rotary substructure 161 in the radial direction, which is convenient for connecting with the driving device 350. Preferably, the second transmission gear 58 is provided with an avoidance portion 58A to avoid the outer ring of the rotary substructure 161. That is, the second transmission gear 58 and the support member 162 are both connected to the inner ring of the rotary substructure 161.

[0210] For example, the second blocking portion 366A includes a first additional connection portion 369M and a second additional connection portion 369N, which are arranged at intervals in the radial direction of the wire drum assembly 370, and the first additional connection portion 369M is further outward than the second additional connection portion 369N in the radial direction. The first additional connection portion 369M and the second additional connection portion 369N extend, for example, in the axial direction of the wire drum assembly 370. The first additional connection portion 369M is used to connect with the side wall 389L of the cylindrical portion 389C (for example, by snapping, bonding, or screwing), and the second additional connection portion 369N is used to tightly fit with the outer ring of the rotary auxiliary structure 161. The opening 369F is provided in the first additional connection portion 369M.

[0211] The wire drum device 360 ​​further includes a first blocking member 365. The first blocking member 365 is disposed at the first end portion 163 of the support member. The first blocking member 365 includes a first blocking portion 365A extending outwardly in the radial direction of the wire drum assembly 370, and is used to prevent the support member 162 from moving in the axial direction of the wire drum assembly 370 in a direction away from the second end portion 164 of the support member. That is, the first blocking portion 365A covers at least a portion of the first end portion 163 of the support member in the axial direction.

[0212] like Fig.12As shown, the support member 162 includes a receiving space 162A, and the receiving space 162A is used to receive the temperature sensor assembly 40. The temperature sensor assembly 40 is exposed from the surface of the support member 162 for contacting the cooking container 30, thereby sensing the temperature of the cooking container 30, that is, sensing the temperature of the food. The temperature sensor assembly 40 is exposed from the first end 163 of the support member, and the second end 164 of the support member is provided with an outlet for leading out the cable 42 of the temperature sensor assembly 40. Preferably, the receiving space 162A passes through the support member 162 along the axial direction of the cable drum assembly 370. The solid part of the support member 162 constitutes the side wall 162B of the receiving space 162A (the side wall 162B of the receiving space 162A is also the side wall 162B of the support member 162).

[0213] The first blocking member 365 also includes a first connecting portion 365B connected to the first blocking portion 365A, the first connecting portion 365B extends, for example, in the axial direction of the wire drum assembly 370 and is located inside the first blocking portion 365A in the radial direction. The second blocking member 366 also includes a second connecting portion 366B connected to the second blocking portion 366A, the second connecting portion 366B extends, for example, in the axial direction of the wire drum assembly 370 and is located inside the second blocking portion 366A in the radial direction. The first connecting portion 365B and the second connecting portion 366B are connected to each other in the accommodating space 162A (for example, by clamping, bonding, or screwing). The first connecting portion 365B and the second connecting portion 366B are also configured as a sleeve, so that the two are connected to form a sleeve, and the support member 162 is clamped between this sleeve and the cylindrical portion 389C in the radial direction of the wire drum assembly 370. The support member 162 is sandwiched between the first blocking portion 365A and the second blocking portion 366A in the axial direction of the drum assembly 370 .

[0214] When the cable drum device 360 ​​is placed in the accommodating chamber 21, the outer peripheral edge of the cable drum 380 is connected to the chamber wall of the accommodating chamber 21, so that the cable drum 380 is stably supported. The second blocking member 366 is mounted to the cylindrical portion 389C of the cable drum 380, so that the second blocking member 366 is stably supported. In addition, the rotary substructure 161, the second transmission wheel 58, the support member 162 and the first blocking member 365 are all stably supported.

[0215] The temperature sensor assembly 40 is disposed in the inner cavity of the sleeve formed by the first connection portion 365B and the second connection portion 366B. The end of the first blocking member 365 corresponding to the end of the first connection portion 365B connected to the first blocking portion 365A is provided with a through hole 369B for exposing the temperature sensor assembly 40. The second blocking member 366 is provided with a wire hole 369A for passing the cable 42 of the temperature sensor assembly 40. It can be understood that the sleeve-shaped second connection portion 366B can naturally form the wire hole 369A.

[0216] When the cooking container 30 is placed in the pot body 20, in order to protect the temperature sensor assembly 40, the temperature sensor assembly 40 includes a spring 41 extending in the axial direction of the wire coil assembly 370. In order to prevent the temperature sensor assembly 40 from leaving the accommodation space 162A, the first blocking member 365 is provided with a first additional blocking portion 369G, and the second blocking member 366 is provided with a second additional blocking portion 369H. At least part of the temperature sensor assembly 40 is limited between the first additional blocking portion 369G and the second additional blocking portion 369H in the axial direction of the wire coil assembly 370.

[0217] In the present application, the first additional blocking portion 369G is a portion of the first blocking member 365 located around the through hole 369B, and the aperture of the through hole 369B is smaller than the diameter of the spring 41. The first additional blocking portion 369G can also be understood as a portion of the end wall (top wall) of the first blocking member 365. The second additional blocking portion 369H is an annular step surface provided on the inner wall of the sleeve of the second connecting portion 366B, and the diameter of the inner ring of the annular step surface is smaller than the diameter of the spring 41. Thus, the spring 41 is limited between the end wall of the first blocking member 365 and the step surface of the second blocking member 366, so that the temperature sensor assembly 40 cannot be separated from the inner cavity of the sleeve formed by the first connecting portion 365B and the second connecting portion 366B, and cannot be separated from the accommodating space 162A.

[0218] like Fig.11 As shown, the coiled wire 382 is located on the lower surface of the wire reel device 360 ​​, so that the coiled wire 382 does not interfere with the turntable 390 and can be conveniently connected to the circuit board assembly 22 .

[0219] The driving device 350 is connected to the turntable 390, and is used to drive the turntable 390 (i.e., the turntable body 393) to rotate relative to the disk-shaped winding 382 (i.e., the wire coiling frame 380, i.e., the pot body 20) around the central axis PA of the wire coil assembly. Specifically, the driving device 350 is connected to the support member 162, and is used to drive the support member 162 to rotate relative to the disk-shaped winding 382 (i.e., the wire coiling frame 380, i.e., the pot body 20) around the central axis PA of the wire coil assembly.

[0220] like Fig.12 As shown, the driving device 350 includes a driving assembly 51 and a transmission assembly 355. The driving assembly 51 is used to provide a driving force to rotate the disk body 393 and the support member 162 relative to the disk winding 382. The transmission assembly 355 is connected between the driving assembly 51 and the support member 162, and is used to transmit the driving force to the disk body 393 and the support member 162.

[0221] Similar to the first embodiment, the driving component 51 is configured as a motor, such as a stepping motor.

[0222] The transmission assembly 355 at least includes a first transmission wheel 57. The first transmission wheel 57 is used to be coaxially connected to the output shaft of the motor 51 so as to rotate under the drive of the motor 51. The second transmission wheel 58 is connected to the first transmission wheel 57, and the transmission assembly 355 is configured so that the second transmission wheel 58 drives the support member 162 and the rotating disk 390 to rotate synchronously under the drive of the first transmission wheel 57. The connection method and material selection of the first transmission wheel 57 and the second transmission wheel 58 can refer to the description in the first embodiment.

[0223] For parts not introduced in the second embodiment, please refer to the description in the first embodiment.

[0224] Third embodiment

[0225] Fig.14 A wire reel device 460 of an electromagnetic heating cooking appliance according to a third embodiment of the present application is shown. Unlike the second embodiment, in the third embodiment, the structure of the turntable 490 of the wire reel assembly 470 of the wire reel device 460 is different from the structure of the turntable 390 of the second embodiment.

[0226] Specifically, the turntable 490 includes a turntable body 493, and the turntable body 493 includes a geometric center axis P9, which coincides or substantially coincides with the center axis PA of the wire drum assembly. The turntable body 493 is connected to the support member 162, and is spaced from the wire drum frame 380 along the axial direction of the wire drum assembly 470, and is spaced from the coiled wire 382. The turntable body 493 is configured to be rotatable relative to the wire drum frame 380 around the center axis PA of the wire drum assembly, and is rotatable relative to the coiled wire 382. The turntable body 493 is alternately divided into a first area 491 and a second area 492 along the circumferential direction of the wire drum assembly 470, or the turntable 490 includes at least one first area 491 and at least one second area 492 correspondingly arranged, and the first area 491 and the second area 492 are alternately arranged on the turntable body 493 along the circumferential direction of the wire drum assembly 470. Among them, the first region 491 includes a material different from the disk body 493, and the second region 492 is entirely made of the material of the disk body 493, so that the alternating magnetic field generated by the disk winding 382 has a magnetic field strength in the first region 491 that is different from that in the second region 492, thereby forming an alternating magnetic field that is unevenly distributed in the circumferential direction of the wire disk assembly 470.

[0227] The disk body 493 is made of a first material, such as a non-magnetic material or a metal with a magnetic permeability of less than or equal to 10B / H. The first region 491 is provided with at least one magnetic line of force gathering member 495, and the magnetic line of force gathering member 495 includes a second material different from the first material, such as a metal with a magnetic permeability of greater than or equal to 100B / H. Since the magnetic permeability of the second material is greater than that of the first material, the magnetic lines of force of the alternating magnetic field are focused (gathered) at the magnetic line of force gathering member 495, so that the magnetic field intensity at the first region 491 is greater than the magnetic field intensity at the second region 492, a strong magnetic region is formed at the first region 491, and a weak magnetic region is formed at the second region 492. For the magnetic field of the disk winding 382, ​​the first material and the second material are two different media.

[0228] A hole or a groove may be formed on the disk body 493 of the first region 491, and the magnetic force line gathering member 495 may be embedded in the hole or the groove. The magnetic force line gathering member 495 may also be attached to the surface of the disk body 493 of the first region 491. Alternatively, the magnetic force line gathering member 495 may be clamped on the disk body 493. Preferably, the thickness of the magnetic force line gathering member 495 is 2 mm to 10 mm. The area of ​​a single magnetic force line gathering member 495 is 28 mm. 2 Up to 5024mm 2 . The area of ​​all magnetic line gathering pieces 495 accounts for 10% to 70% of the area of ​​the disk body 493. The area here refers to the area corresponding to the surface area of ​​one side of the disk body 493. The area of ​​the disk body 493 is the surface area of ​​one side when the disk body 493 does not have a through hole or a notch, that is, the area of ​​the complete disk surface. The area of ​​the magnetic line gathering piece 495 can be understood as the area of ​​its projection on the corresponding part of the complete disk surface of the disk body 493. In the assembled state of the online disk device 460, the distance between the magnetic line gathering piece 495 and the disk winding 382 is 3.5mm to 15mm, that is, the gap between the magnetic line gathering piece 495 and the disk winding 382 is 3.5mm to 15mm.

[0229] The multiple first regions 491 can be constructed to be the same or different. For example, the magnetic line of force gathering members 495 of each first region 491 have different shapes (can be rectangular, circular, annular, L-shaped, C-shaped, etc., the present application does not make specific restrictions, it can be understood that at least part of the magnetic line of force gathering members 495 extends along the magnetic lines of force of the magnetic field of the disc winding 382), different numbers, and different total areas. There is a first distance between two adjacent magnetic line of force gathering members 495 of each first region 491. Two adjacent first regions 491 have two magnetic line of force gathering members 495 that are closest to each other, and there is a second distance between these two magnetic line of force gathering members 495. The maximum value of the first distance is smaller than the second distance, that is, the distance between the magnetic line gathering parts 495 of two adjacent first areas 491 is significantly larger than the distance between two adjacent magnetic line gathering parts 495 inside the first area 491, so that the turntable 490 can form a clear first area 491 and a second area 492, and accordingly, the alternating magnetic field can form clear strong magnetic areas and weak magnetic areas.

[0230] Since the disc-shaped winding 382 generates a lot of heat after being energized, preferably, the second region 492 is provided with at least one heat dissipation hole 496 to help dissipate heat. The plurality of second regions 492 may be constructed in the same manner or in different manners, for example, the heat dissipation holes of each second region 492 may have different shapes, different numbers, and different total areas.

[0231] Therefore, the second embodiment differs from the first embodiment mainly in the formation of the medium different from the disk body 493 in the first area 491 of the turntable 490. For the parts not introduced in the third embodiment, refer to the description of the first and second embodiments.

[0232] Fourth embodiment

[0233] like Fig.15 As shown, in the fourth embodiment of the present application, the electromagnetic heating cooking device 500 (hereinafter referred to as the cooking device 500) has a structure similar to that of the cooking device 400, and the difference between the electromagnetic heating cooking device 500 and the cooking device 400 is that the structure of the wire drum device 560 is different from that of the wire drum device 460. Fig.16 As shown, in the wire reel assembly 570, the turntable 490 is used to be arranged below the wire reel rack 380 along the height direction of the cooking utensil 500. The wire reel device 460 is configured so that the turntable 490 can rotate relative to the wire reel rack around the central axis PA of the wire reel assembly. The composition mechanism of the wire reel device 560 is described in detail below.

[0234] Specifically, the wire drum device 560 includes a support member 162 , a wire drum assembly 570 , a rotary sub-structure 161 , a second blocking member 366 , and a temperature sensor assembly 40 .

[0235] The wire reel assembly 570 is disposed on the support 162. The wire reel assembly includes a coiled wire 382, ​​a coiling frame 380, and a turntable 490 (also referred to as a turntable body 490). The main parts of the coiled wire 382, ​​the coiling frame 380, and the turntable 490 are the same as in the first embodiment.

[0236] The coiled wire 382 is connected to the support member 162. The coiled wire 382 is spirally wound around the central axis PA of the wire drum assembly on the surface of the wire drum frame 380 (see Fig.17 ). The wire coiling rack 380 is connected to the support 162, so that the coiled wire 382 is connected to the support 162. The disk body 493 of the turntable 490 is connected to the support 162 and is spaced from the wire coiling rack 380 in the axial direction of the wire coil assembly 570, and is spaced from the coiled wire 382. The disk body 493 is configured to be rotatable relative to the wire coiling rack 380 around the center axis PA of the wire coil assembly, and is rotatable relative to the coiled wire 382. The first area 491 and the second area 492 of the turntable 490 are configured in the same manner as in the cooking appliance 400, and will not be repeated here.

[0237] The wire coiling rack 380 and the disk body 493 extend substantially parallel to each other, so that the turntable 490 can better act on the magnetic field generated by the coiled wire 382. Preferably, the wire coiling rack 380 and the disk body 493 both have radially symmetrical structures, so as to facilitate processing and better match the cooking container 30 which is also radially symmetrical. Preferably, the axial cross-sections of the wire coiling rack 380 and the disk body 493 are both C-shaped structures, so that the coiled wire 382 can surround the side wall of the cooking container 30. In the present application, the wire coiling rack 380 is used to be arranged on the inner side of the C-shaped structure of the disk body 493, that is, the wire coiling rack 380 is used at least above the disk body 493 along the height direction of the cooking utensil 500. The coiled wire 382 is arranged on the outer side of the C-shaped structure of the wire coiling rack 380, that is, the side of the wire coiling rack 380 that faces the disk body 493.

[0238] The support member 162 is, for example, substantially cylindrical. The support member 162 includes a support member first end 163 and a support member second end 164 which are arranged oppositely in the axial direction of the cable drum assembly 570. In the working state, the support member first end 163 is located above the support member second end 164. The cable drum 380 is connected to the support member first end 163, and the drum body 493 is connected to the support member second end 164. The cable drum device 560 is configured so that the drum body 493 can rotate relative to the support member second end 164 around the cable drum assembly central axis PA, and thus can rotate relative to the cable drum 380. Preferably, the support member 162 and the cable drum 380 are integrally formed, for example, integrally injection molded, that is, the support member 162 and the cable drum 380 can be combined into one component.

[0239] Specifically, a disk body through hole 599A extending in the axial direction of the disk body 493 is provided at the central part or approximately at the central part of the disk body 493, and the support member 162 is provided in the disk body through hole 599A. For example, a cylindrical portion 599C extending in the axial direction of the disk body 493 is provided at the central part of the disk body 493, the internal through hole of the cylindrical portion 599C is the disk body through hole 599A, and the solid part of the cylindrical portion 599C is the side wall 599L of the disk body through hole 599A. The cylindrical portion 599C has a cylindrical portion first end 599X and a cylindrical portion second end 599Y which are arranged oppositely in the axial direction of the disk body 493, and in the working state, the cylindrical portion first end 599X is located above the cylindrical portion second end 599Y. The first end 599X of the cylindrical portion is connected to the central part of the disc body 493, and the second end 599Y of the cylindrical portion extends in a direction away from the disc body 493, that is, away from the disc body 493. The second end 599Y of the cylindrical portion is, for example, located outside the C-shaped structure of the disc body 493. The central axis of the cylindrical portion 599C coincides with the central axis PA of the cable drum assembly.

[0240] The support member 162 is adapted to the disk body through hole 599A so that the disk body 493 can rotate relative to the support member 162 around the central axis PA of the wire disk assembly. For example, the wire disk device 560 further includes a swivel substructure 161, and the side wall 599L of the disk body through hole 599A is connected to the second end 164 of the support member through the swivel substructure 161, wherein the axis of the swivel substructure 161 coincides with the central axis PA of the wire disk assembly. For example, the inner peripheral surface of the side wall 599L of the wire disk through hole is connected to the outer peripheral surface of the second end 164 of the support member through the swivel substructure 161. The side wall 599L of the wire disk through hole is tightly matched with the outer ring of the swivel substructure 161, and the second end 164 of the support member is tightly matched with the inner ring of the swivel substructure 161, so that the turntable 490 can stably rotate around the support member 162. The swivel substructure 161 is configured, for example, as a rolling swivel substructure or a sliding swivel substructure (such as a bearing, a bushing). Preferably, the rotary sub-structure 161 is made of non-metallic material (such as resin, plastic) so as not to interfere with the magnetic field of the disc-shaped winding 382 .

[0241] The wire drum device 560 further includes a second blocking member 566, which is disposed at the second end portion 164 of the support member. The second blocking member 566 includes a second blocking portion 566A extending outwardly in the radial direction of the wire drum assembly 570. The outer peripheral surface of the support member 162 includes a blocking surface 599M extending toward the cylindrical portion 599C in the radial direction of the wire drum assembly 570. The wire drum device 560 is configured so that the rotary secondary structure 161 is limited between the blocking surface 599M and the second blocking portion 566A in the axial direction of the wire drum assembly 570. The second blocking member 566 is, for example, bonded, clamped, or threadedly connected to the support member 162.

[0242] The inner circumferential surface of the plate body through hole 599A is provided with a protrusion 599B extending toward the support member 162 in the radial direction of the wire plate assembly 570, and the protrusion 599B is used to contact the side of the rotary substructure 161 facing the first end portion 163 of the support member. Thus, the rotary substructure 161 can support the cylindrical portion 599C, that is, support the turntable 490. The cylindrical portion 599C can be regarded as a plate body connection portion of the plate body 490 for connecting with the cooking utensil 500.

[0243] When the wire coil device 560 is placed in the accommodating cavity 21 of the pot body 20, the outer peripheral edge of the wire coil rack 380 is connected to the cavity wall of the accommodating cavity 21 (see Fig.15 ), so that the wire reel 380 is supported by the pot body 20. The swivel substructure 161 is stably supported by the support member 162 and the second blocking member 566. Then, the swivel substructure 161 provides stable support to the turntable 490. Thus, the various components of the wire reel device 560 can be stably assembled together and stably supported in the accommodating chamber 21.

[0244] like Fig.16 As shown, the support member 162 includes a receiving space 162A, and the receiving space 162A is used to receive the temperature sensor assembly 40. The temperature sensor assembly 40 is exposed from the surface of the support member 162 for contacting the cooking container 30, thereby sensing the temperature of the cooking container 30, that is, sensing the temperature of the food. The temperature sensor assembly 40 is exposed from the first end 163 of the support member, and the second end 164 of the support member is provided with an outlet for leading out the cable 42 of the temperature sensor assembly 40. Preferably, the receiving space 162A passes through the support member 162 along the axial direction of the cable drum assembly 570. The second blocking member 566 also includes a second connecting portion 566B connected to the second blocking portion 566A, and the second connecting portion 566B, for example, extends inward from the second blocking portion 566A substantially along the radial direction of the cable drum assembly 570 to form at least a portion of the outer wall (e.g., bottom wall) of the receiving space 162A. Thus, the second connecting portion 566B can support the temperature sensor assembly 40. The second blocking member 566 is provided with a wire passage hole 569A for passing the cable 42 of the temperature sensor assembly 40 .

[0245] When the cooking container 30 is placed in the pot body 20, in order to protect the temperature sensor assembly 40, the temperature sensor assembly 40 includes a spring 41 extending in the axial direction of the wire drum assembly 570. In order to protect the temperature sensor assembly 40 from being separated from the accommodating space 162A, the first end portion 163 of the support member includes a first additional blocking portion 569G, and at least part of the temperature sensor assembly 40 is limited between the first additional blocking portion 569G and the second connecting portion 566B. In the present application, the first additional blocking portion 569G is, for example, the top wall of the accommodating space 162A, and the top wall is provided with a circular hole 569H to expose the temperature sensor assembly 40. The aperture of the circular hole 569H is smaller than the diameter of the spring 41. The diameter of the wire hole 569A is also smaller than the diameter of the spring 41. The first additional blocking portion 569G and the second connecting portion 566B limit the spring 41 in the axial direction of the wire drum assembly 570, so that the temperature sensor assembly 40 will not be separated from the accommodating space 162A.

[0246] like Fig.16 As shown, the wire coiling rack 380 is located at the periphery of the first end portion 163 of the support member, and the coiled wire 382 is coiled around the central axis PA of the wire coil assembly on the surface of the wire coiling rack 380 on the side facing the second end portion 164 of the support member. The coiled wire 382 is not disposed on the side of the wire coiling rack 380 facing the cooking container 30, which is beneficial to protecting the coiled wire 382. The turntable 490 is connected to the second end portion 164 of the support member and can rotate around the support member 162. The coiled wire 382 is sandwiched between the wire coiling rack 380 and the turntable 490. In order to better connect the enameled wire 389B of the coiled wire 382 to the circuit board assembly 22, as shown in FIG. Fig.18 As shown, the side wall of the accommodation space 162A located at the first end 163 of the support member is provided with a first additional wire hole 169B, and the second blocking member 566 is provided with a second additional wire hole 569I. The wire 389B of the coiled winding 382 passes through the first additional wire hole into the accommodation space 162A, and then passes through the second additional wire hole 569I out of the accommodation space 162A. Fig.15 As shown, after the enameled wire 389B passes through the accommodating space 162A from the second additional wire hole 569I, it is located below the turntable 490 and does not interfere with the turntable 490, so it can be easily connected to the circuit board assembly 22.

[0247] like Fig.15 and Fig.16As shown, the driving device 50 is connected to the disc body 493, and is used to drive the disc body 493 to rotate relative to the disc winding 382 (i.e., the disc frame 380, i.e., the support member 162, i.e., the pot body 20) around the central axis PA of the wire disc assembly. Specifically, the driving device 50 includes a driving assembly 51 and a transmission assembly 55. The driving assembly 51 is used to provide a driving force for rotating the disc body 493 relative to the disc winding 382. The transmission assembly 55 is connected between the driving assembly 51 and the disc body 493, and is used to transmit the driving force to the disc body 493.

[0248] The drive assembly 51 is configured as a motor, for example, and its construction, installation and control methods are the same as those in the first embodiment (see Figure 4 The transmission assembly 55 at least includes a first transmission wheel 57 and a second transmission wheel 58, which are the same as those in the first embodiment.

[0249] The second transmission wheel 58 is used to connect the rotating disk 490. Preferably, the second transmission wheel 58 is used to connect the cylindrical portion 599C of the rotating disk 490. The second transmission wheel 58 is an annular structure, and is used to be sleeved on the outer periphery of the cylindrical portion 599C. Fig.19 As shown, the outer peripheral surface of the cylindrical portion 599C is provided with a connection structure 599D for connecting the second transmission wheel 58 of the driving device 50. The connection structure 599D can be regarded as a part of the cylindrical portion 599C.

[0250] Specifically, the connection structure 599D includes a first limit stop surface 599E, which extends outward from the outer peripheral surface of the cylindrical portion 599C in the radial direction of the cylindrical portion 599C and toward the second end 599Y of the cylindrical portion, and is used to limit the second transmission wheel 58 from moving along the axial direction of the cylindrical portion 599C toward the disk body 493. The first limit stop surface 599E is formed by, for example, an annular convex rib or an annular step surface on the outer peripheral surface of the cylindrical portion 599C.

[0251] like Figure 4 As shown, the inner circumferential surface of the second transmission wheel 58 is provided with at least one second connecting body 58F. Fig.19 As shown, the connection structure 599D includes at least one first connection body 599F, and the first connection body 599F is used to be arranged corresponding to the second connection body 58F and is used to connect the corresponding second connection body 58F. The first connection body 599F is closer to the second end 599Y of the cylindrical portion than the first limit stop surface 599E. When the second transmission wheel 58 is located at the set position of the cylindrical portion 599C, the first connection body 599F is used to be engaged with the second connection body 58F to limit the second transmission wheel 58 from rotating relative to the cylindrical portion 599C, so that the second transmission wheel 58 can drive the cylindrical portion 599C to rotate synchronously.

[0252] In the illustrated embodiment, the first connecting body 599F is a convex rib provided on the outer peripheral surface of the cylindrical portion 599C, and the second connecting body 58F is a limiting groove provided on the inner peripheral surface of the second transmission wheel 58, the limiting groove extending along the axial direction of the second transmission wheel 58, and the limiting groove 58F is used to accommodate the convex rib 599F. Alternatively, the first connecting body 599F is a limiting groove provided on the outer peripheral surface of the cylindrical portion 599C, the limiting groove extending along the axial direction of the cylindrical portion 599C, and the second connecting body 58F is a convex rib provided on the inner peripheral surface of the transmission wheel 58, and the limiting groove 599F is used to accommodate the convex rib 58F.

[0253] Preferably, the second transmission wheel 58 includes a plurality of second connecting bodies 58F, and the plurality of second connecting bodies 58F are, for example, evenly spaced along the circumferential direction of the second transmission wheel 58. A plurality of first connecting bodies 599F are correspondingly disposed on the outer circumferential surface of the cylindrical portion 599C.

[0254] The connection structure 599D further includes at least one second stopper 599G, which is disposed on the outer peripheral surface of the cylindrical portion 599C. The second stopper 599G includes a second stopper surface 599H on the side facing the first end 599X of the cylindrical portion. The second stopper surface 599H extends outward from the outer peripheral surface of the cylindrical portion 599C along the radial direction of the cylindrical portion 599C. The second stopper surface 599H is closer to the second end 599Y of the cylindrical portion 599C than the first stopper surface 599E. Thus, when the second transmission wheel 58 is mounted on the cylindrical portion 599C, the second transmission wheel 58 is limited between the first stopper surface 599E and the second stopper surface 599H along the axial direction of the cylindrical portion 599C.

[0255] Since the second limit stopper 599G protrudes from the outer circumferential surface of the cylindrical portion 599C, in order to facilitate the installation of the second transmission wheel 58, the portions of the cylindrical portion 599C located on both sides of the second limit stopper 599G along the circumferential direction of the cylindrical portion 599C are configured as functional grooves 599J extending in the axial direction of the cylindrical portion 599C, and the functional grooves 599J penetrate the side wall of the cylindrical portion 599C. Thus, the portion of the side wall of the cylindrical portion 599C corresponding to the second limit stopper 599G is cut off from the side walls on both sides, so that the portion can swing in the radial direction of the cylindrical portion 599C. The second limit stopper 599G has a first outer surface 599I located on the side facing away from the axis of the cylindrical portion 599C, and the first outer surface 599I is configured to be inclined relative to the axis of the cylindrical portion 599C, so that the distance between the end of the first outer surface 599I facing the second end 599Y of the cylindrical portion 599C and the axis of the cylindrical portion 599C is smaller than the distance between the end of the first outer surface 599I facing the first end 599X of the cylindrical portion 599C and the axis of the cylindrical portion 599C, that is, the first outer surface 599I is inclined from the outside to the inside. Therefore, the outer diameter of the portion of the cylindrical portion 599C at the second limit stopper 599G gradually increases from bottom to top.

[0256] When installing the second transmission wheel 58, the second transmission wheel 58 is sleeved on the outer circumference of the cylindrical portion 599C from bottom to top. The first outer surface 599I has a guiding function, and the functional groove 599J can enable the second limit stop 599G to move toward the space inside the cylindrical portion 599C under the pressure of the second transmission wheel 58, so that the second transmission wheel 58 can pass over the second limit stop 599G. When the second transmission wheel 58 moves to a predetermined position, the second limit stop 599G uses the elasticity of the material of the cylindrical wall of the cylindrical portion 599C to reset the second transmission wheel 58 between the first limit stop surface 599E and the second limit stop surface 599H.

[0257] Preferably, a plurality of second limit stops 599G are provided on the outer periphery of the cylindrical portion 599C, and the plurality of second limit stops 599G are distributed at equal intervals along the circumferential direction of the cylindrical portion 599C, for example.

[0258] In order to facilitate the connection between the cylindrical portion 599C and the driving device 50 , preferably, the cylindrical portion 599C is located outside the C-shaped structure of the disk body 490 .

[0259] In an embodiment not shown in the present application, the cooking utensil 500 is configured so that the cooking container 30 can rotate in the pot body 20 under the drive of the driving device 50, while the plate body 490 remains stationary relative to the pot body 20. For example, the outer peripheral edge of the plate body 493 can be connected to the side wall of the accommodating cavity 21, the second end 164 of the support member extends downward beyond the cylindrical portion 599C, the second transmission wheel 58 is connected to the portion of the second end 164 of the support member that exceeds the cylindrical portion 599C, and at the same time, the first end 163 of the support member is provided with a clutch for connecting with the cooking container 30. Thus, the driving device 50 drives the support member 162 to rotate, and the support member 162 drives the cooking container 30 to rotate synchronously through the clutch. In such an embodiment, the turntable 490 still rotates relative to the disc winding 382, ​​the cooking container 30 rotates relative to the turntable 490 around the central axis PA of the wire reel assembly (i.e., the geometric central axis P9, i.e., the central axis P8 of the wire reel rack), and the cooking container 30 and the non-uniform magnetic field generated by the wire reel assembly 570 can still rotate relative to each other.

[0260] Compared with the third embodiment, in the fourth embodiment, the turntable 490 is closer to the disc-shaped winding 382. In the fourth embodiment, in the working state (the assembled state of the wire reel device 560), the distance between the magnetic line gathering member 495 and the disc-shaped winding 382 is 1 mm to 15 mm, that is, the gap between the magnetic line gathering member 495 and the disc-shaped winding 382 is 1 mm to 15 mm.

[0261] For parts not introduced in the fourth embodiment, refer to the descriptions in the first, second and third embodiments.

[0262] Fifth embodiment

[0263] Different from the first four implementations, Figure 20 to Figure 24 In the fifth embodiment shown, the electromagnetic heating cooking utensil 600 (referred to as cooking utensil 600) is constructed so that the alternating magnetic field generated by the disc winding 182, which is non-uniformly distributed in the circumferential direction of the wire reel assembly 670, remains unchanged in position relative to the pot body 20, and the cooking container 30 rotates around the central axis PA of the wire reel assembly, thereby achieving relative rotation between the cooking container 30 and the magnetic field.

[0264] like Fig.21 and Fig. 22 As shown, in the fifth embodiment, the structure of the wire drum assembly 670 is substantially the same as that of the wire drum assembly 170 in the first embodiment.

[0265] The wire reel assembly 670 includes a wire reel frame 180, at least one wire reel support 183, and at least one coiled wire 182. The wire reel frame 180 has a central axis P8 of the wire reel frame, which is also the central axis PA of the wire reel assembly. The wire reel supports 683 are arranged at intervals along the circumferential direction of the wire reel frame 180. The coiled wire 182 is wound on the wire reel support 683, so that the coiled wire 182 is arranged at intervals along the circumferential direction of the wire reel frame 180. The winding center of the coiled wire 182 is set on the axis of the wire reel support 683, and the axis of the wire reel support 683 deviates from the central axis P8 of the wire reel frame, so that the coiled wire 182 is not concentric with the wire reel frame 180. In a specific implementation, a plurality of wire reel supports 683 can be further arranged at equal intervals along the circumferential direction of the wire reel frame 180. A magnetic conductive member may also be provided on the wire drum support 683 to further focus the magnetic lines of force of the magnetic field of the disk-shaped winding 182 .

[0266] The coiled wire 182 is formed by, for example, coiling an enameled wire 189. The enameled wire 189 includes a coiled portion 182A and two end portions 182B. The coiled portion 182A is coiled around the center of the winding to form an effective resonant inductance of the electromagnetic heating resonant circuit. The end portion 182B is a portion of the enameled wire 189 that is not used to form an effective resonant inductance, and the coiled portion 182A is located between the two end portions 182B. At least part of the plurality of coiled wires 182 is connected in series, that is, coiled by the same enameled wire 189; or, the plurality of coiled wires 182 do not share a common wire, that is, each coiled wire is coiled by its own enameled wire 189. Preferably, the coil rack 180 is provided with a bunching member 180P for gathering all the end portions 182B. The end portion 182B is connected to the circuit board assembly 22 through the cable assembly 29, so that the circuit board assembly 22 can supply power to the coiled wire 182.

[0267] like Fig.23 As shown, the wire reel device 660 of the cooking appliance 600 includes a clutch member 46 , a wire reel assembly 670 and a temperature sensor assembly 40 .

[0268] The temperature sensor assembly has a temperature sensor assembly central axis P4, and in the assembled state, the temperature sensor assembly central axis P4 coincides or substantially coincides with the cable reel assembly central axis PA. The temperature sensor assembly 40 includes a housing 43 for contacting the bottom surface of the cooking container 30 and a cable 484 extending from the housing 43. The temperature sensor assembly 40 is constructed so that the housing 43 and the cable 484 can rotate relative to each other around the temperature sensor assembly central axis P4. In the fifth embodiment, the cable 484 is used to maintain a relative position unchanged with the cable reel 180. For example, the outer periphery of the cable reel 180 is connected to the side wall of the accommodating cavity 21, and the mounting support of the cable 484 is fixed to the cavity wall of the accommodating cavity 21, thereby being mechanically connected to the cable reel 180 through the cavity wall of the accommodating cavity 21, so that the relative position of the two remains unchanged. The wire reel device 660 is constructed so that the shell 43 can rotate around the central axis P8 of the wire reel relative to the cable 484, so as to drive the cooking container 30 to rotate synchronously around the central axis P8 of the wire reel relative to the cable 484, thereby making the cooking container 30 rotatable around the central axis P8 of the wire reel relative to the wire reel 180.

[0269] like Fig.21 and Fig. 22 As shown, a cylindrical portion 188C is provided at the central portion or approximately the central portion of the wire coiling rack 180, and the cylindrical portion 188C extends along the axial direction of the wire coiling rack 180, and a wire coil through hole 188A is formed inside the cylindrical portion 188C. The temperature sensor assembly 40 is provided in the wire coil through hole 188A. That is, the wire coiling rack 180 is sleeved on the outer periphery of the housing 43. The temperature sensor assembly 40 is adapted to the wire coil through hole 188A, so that the housing 43 of the temperature sensor assembly 40 can rotate relative to the wire coiling rack 180 around the central axis P8 of the wire coiling rack.

[0270] For example, Fig.23 As shown, the side wall of the wire drum through hole 188A is connected to the outer peripheral surface of the shell 43 through a rotary substructure 161. The axis of the rotary substructure 161 coincides with the central axis P8 of the wire drum frame. The rotary substructure 161 can be selectively configured as a rolling bearing, so that the inner ring of the rolling bearing 161 is tightly fitted with the outer peripheral surface of the shell 43, and the outer ring of the rolling bearing 161 is tightly fitted with the inner peripheral surface of the wire drum through hole 188A. As a convertible embodiment, the rotary substructure 161 can also be selectively configured as a sliding sleeve. In order to prevent electromagnetic interference, the rotary substructure 161 is further selectively made of non-metallic material. The driving device 50 is used to drive the shell 43 of the temperature sensor assembly 40 to rotate. The structure of the driving device 50 is the same as that in the first embodiment, and will not be repeated here. The second transmission wheel 58 is connected to the shell 43, for example, it is sleeved on the outer periphery of the shell 43.

[0271] like Fig.23 and Fig.24 As shown, the housing 43 includes a first end 431 and a second end 432 which are arranged in opposite directions along the axial direction of the wire coiling rack 180, wherein the first end 431 is used to contact the bottom surface of the cooking container 30, and the second end 432 is provided with a wire outlet to lead out the cable 484 of the temperature sensor assembly 40. The axial direction of the temperature sensor assembly 40 is also the axial direction of the wire coiling rack 180, and the radial direction of the temperature sensor assembly 40 is also the radial direction of the wire coiling rack 180. It can be understood that an electronic component for temperature sensing, such as a thermistor, is arranged inside the housing 43, and the lead of the electronic component is led out through the cable 484 and connected to the circuit board assembly 22.

[0272] Preferably, the rotary substructure 161 is connected to the first end 431 of the shell 43, and the second transmission wheel 58 is connected to the second end 432 of the shell 43, so that the drive device 50 is located below the wire coil rack 180 in the assembled state, which facilitates the arrangement of the drive device 50.

[0273] like Fig.24 As shown, the outer peripheral surface of the shell 43 of the temperature sensor assembly 40 is provided with a connecting structure 45 for connecting to the second transmission wheel 58 of the driving device 50, so that the shell 43 can rotate relative to the wire coiling frame 180 around the central axis P8 of the wire coiling frame under the drive of the driving device 50.

[0274] Specifically, the connection structure 45 includes a first limit stop surface 453, which extends outward from the outer peripheral surface of the temperature sensor assembly 40 in the radial direction of the temperature sensor assembly 40, and is used to limit the transmission wheel 58 from moving toward the cable reel 180 along the axial direction of the temperature sensor assembly 40. For example, the housing 43 includes a first blocking portion 433 extending outward in the radial direction, and its surface facing the second end 432 forms the first limit stop surface 453. Preferably, the rotary sub-structure 161 is arranged on the side of the first blocking portion 433 facing the first end 431, so that the first blocking portion can also limit the axial position of the rotary sub-structure.

[0275] The inner circumferential surface of the second transmission wheel 58 is provided with at least one second connecting body 58F (see Figure 4 ), the connection structure 45 further includes at least one first connection body 451, which is used to be arranged corresponding to the second connection body 58F and connected to the second connection body 58F. The first connection body 451 is closer to the second end 432 than the first limit stop surface 453. When the second transmission wheel 58 is installed to the set position, the first connection body 451 is engaged with the second connection body 58F to limit the rotation of the second transmission wheel 58 relative to the connection structure 45. In the illustrated embodiment, the connection structure 45 includes a plurality of first connection bodies 451, which are arranged at intervals along the circumference of the temperature sensor assembly 40, for example, at equal intervals.

[0276] Preferably, the second connecting body 58F is a limiting groove arranged on the inner circumferential surface of the second transmission wheel 58, and the limiting groove extends along the axial direction of the second transmission wheel 58. The first connecting body 451 is a convex rib arranged on the outer circumferential surface of the temperature sensor assembly 40, and the limiting groove of the second connecting body 58F is used to accommodate the convex rib of the first connecting body 451.

[0277] The connection structure 45 further includes at least one second limit stopper 456, which is disposed on the outer peripheral surface of the housing 43 of the temperature sensor assembly 40. The second limit stopper 456 includes a second limit stopper surface 454 on one side facing the first end 431, and the second limit stopper surface 454 extends outward from the outer peripheral surface of the temperature sensor assembly 40 along the radial direction of the temperature sensor assembly 40, and the second limit stopper surface 454 is closer to the second end 432 than the first limit stopper surface 453. The second limit stopper surface 454 is used to define the axial position of the second transmission wheel 58 together with the first limit stopper surface 453.

[0278] The second limit stopper 456 has a first outer surface 455 located on the side facing away from the central axis P4 of the temperature sensor assembly 40, and the first outer surface 455 is configured to be inclined relative to the central axis P4 of the temperature sensor assembly 40, so that the distance between the end of the first outer surface 455 facing the second end 432 and the central axis P4 of the temperature sensor assembly 40 is smaller than the distance between the end of the first outer surface 455 facing the first end 431 and the central axis P4 of the temperature sensor assembly 40. The parts of the housing 43 of the temperature sensor assembly 40 located on both sides of the second limit stopper 456 along the circumferential direction of the temperature sensor assembly 40 are configured as functional grooves 457 extending along the axial direction of the temperature sensor assembly 40, and the functional grooves 457 penetrate the side wall of the housing 43 of the temperature sensor assembly 40.

[0279] The housing 43 is made of materials such as plastics and resins. When the second transmission wheel 58 is installed on the housing 43, the second transmission wheel 58 is sleeved from the second end 432. The first outer surface 455 plays a guiding role, also known as a guiding slope. The second limit stopper 456 is also called a limit guide structure. Under the action of the guide slope 455, the second transmission wheel 58 can be easily moved to a preset position. At the same time, by setting a through functional groove 457 on both sides of the limit guide structure 456, when the second transmission wheel 58 is installed, the limit guide structure 456 in a cantilever state will swing toward the cavity inside the housing 43, so that the second transmission wheel 58 can be more easily installed to the set position. When the second transmission wheel 58 reaches the preset position (over the second limit stop surface 454), the limit guide structure 456 will use its own elastic deformation ability to reset, so that the second transmission wheel 58 is clamped between the second limit stop surface 454 and the first limit stop surface 453.

[0280] In the illustrated embodiment, the connection structure 45 includes a plurality of second limit stoppers 456 , and the plurality of second limit stoppers 456 are arranged at intervals along the circumferential direction of the temperature sensor assembly 40 , for example, at equal intervals.

[0281] The clutch 46 is used to be detachably connected to the bottom surface of the cooking container 30. When the cooking container 30 is placed in the accommodating chamber 21, the clutch 46 contacts the bottom of the cooking container 30. The clutch 46 is connected to the housing 43, for example, it is arranged on the first end 431 of the housing 43, for example, it is sleeved on the outer periphery of the first end 431, so that the clutch 46 and the housing 43 can rotate synchronously relative to the pot body 20 around the central axis P4 of the temperature sensor. For example, the cooking container 30 includes a ferromagnetic material, and the clutch 46 is configured to have magnetism, so that the two are connected by magnetic attraction; and / or, the clutch 46 is configured to be engaged with the bottom surface of the cooking container 30.

[0282] like Fig.23 As shown, the clutch member 46 is provided with a limiting through hole 461, for example, and the first end 431 of the housing 43 passes through the limiting through hole 461, so that the clutch member 46 is sleeved on the first end 431. Fig.24 As shown, the housing 43 of the temperature sensor assembly 40 further includes a second blocking portion 434 extending outwardly in the radial direction for contacting a side of the clutch member 46 facing the second end 432 of the housing 43. Thus, the clutch member 46 can have a stable axial position.

[0283] For parts not introduced in the fifth embodiment, refer to the descriptions in the first, second, third and fourth embodiments.

[0284] Sixth Embodiment

[0285] exist Fig.25In the illustrated sixth embodiment, the cooking appliance 700 is configured so that the cooking container 30 is rotated, similar to the fifth embodiment.

[0286] The wire reel assembly 170 of the cooking device 700 is constructed in the same manner as the first and fifth embodiments, and a magnetic field that is non-uniformly distributed along the circumferential direction is constructed by arranging the coiled wire 182 and the wire reel frame 180 non-concentrically.

[0287] The driving device 750 is used to drive the cooking container 30 to rotate relative to the wire coiling rack 182 around the central axis PA of the wire coil assembly. In this embodiment, the driving device 750 directly contacts the container wall of the cooking container 30. For example, the driving device 750 includes a motor 51 and a friction wheel 755. The motor 51 is, for example, disposed in a pot body (not shown). The friction wheel 755 is coaxially connected to the output shaft 59 of the motor 51 to rotate under the drive of the motor 51. Preferably, when the cooking container 30 is located in the pot body, the friction wheel 755 contacts the edge of the mouth of the cooking container 30, and drives the cooking container 30 to rotate by friction. Of course, the friction wheel 755 can also contact the container wall of other parts of the cooking container 30 to rotate the cooking container 30. The driving device 750 can also be disposed on the cover or other parts of the cooking utensil.

[0288] For parts not introduced in the sixth embodiment, please refer to the description in the above-mentioned first to fifth embodiments.

[0289] The electromagnetic heating cooking utensil according to the present application can construct a magnetic field that is non-uniformly distributed in the circumferential direction, and make the magnetic field rotate relative to the cooking container, so that the heated part of the cooking container rotates on the cooking container, thereby uniformly heating the cooking container.

[0290] The electromagnetic heating cooking utensils according to the present application may include various types such as electric rice cookers, electric pressure cookers, electric hot pots, induction cookers, etc. Those skilled in the art may adjust the structure according to specific needs based on the above embodiments.

[0291] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0292] In understanding the scope of the present application, the term "comprising" and its derivatives as used herein are intended to be open terms, which specify the existence of the recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "including", "having" and their derivatives.

[0293] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0294] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present application. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present application. The features described herein in one embodiment may be applied to another embodiment individually or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0295] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the described embodiments. In addition, it can be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed by the present application.

Claims

1. An electromagnetic heating cooking appliance, It is characterized in that include: A wire drum assembly, the wire drum assembly comprising at least one coiled wire, the coiled wire being used to generate an alternating magnetic field after being energized, the wire drum assembly having a central axis of the wire drum assembly, the wire drum assembly being configured such that the magnetic field strength of the alternating magnetic field is non-uniformly distributed along the circumferential direction of the wire drum assembly; and A cooking container for holding food, the cooking container having a central axis of the cooking container, the cooking container comprising a ferromagnetic material, and the cooking container as a whole is in the shape of a rotating body with the central axis of the cooking container as an axis, the cooking container and the wire reel assembly are detachably arranged in a magnetically inductive region of the wire reel assembly, the central axis of the cooking container substantially coincides with the central axis of the wire reel rack, The electromagnetic heating cooking appliance is configured such that the cooking container can rotate relative to the wire reel assembly around the central axis of the cooking container, or at least a portion of the wire reel assembly can rotate relative to the cooking container around the central axis of the wire reel assembly.

2. The electromagnetic heating cooking device according to claim 1, It is characterized in that The wire drum assembly includes a coiled wire, the winding center of the coiled wire is offset from the central axis of the wire drum assembly; or The wire drum assembly includes at least two coiled wires, and all of the coiled wires are arranged at intervals along the circumferential direction of the wire drum assembly.

3. The electromagnetic heating cooking device according to claim 2, It is characterized in that The wire reel assembly further comprises a wire coiling rack, which is arranged at one side of the cooking container, and the wire coiling rack is configured to be rotatable around a central axis of the wire reel assembly, wherein the coiled wire is arranged on the wire coiling rack.

4. The electromagnetic heating cooking device according to claim 3, It is characterized in that The coiled wire is arranged in a coil shape on the coiling rack.

5. The electromagnetic heating cooking device according to claim 3, It is characterized in that The distance between the coiled wire and the cooking container is 3 mm to 30 mm.

6. The electromagnetic heating cooking device according to claim 3, It is characterized in that The cable drum assembly further includes a magnetic conductive member, which at least partially extends along magnetic lines of force of the alternating magnetic field.

7. The electromagnetic heating cooking device according to claim 1, It is characterized in that The coiled wire is coiled around the central axis of the wire drum assembly and forms a radially symmetrical shape with the central axis of the wire drum assembly as an axis.

8. The electromagnetic heating cooking device according to claim 7, It is characterized in that The cable drum assembly further comprises a drum body, wherein the drum body comprises: a disc body, the disc body having a geometric center axis, the geometric center axis being the center axis of the wire disc assembly, the disc body being configured to be rotatable relative to the disc-shaped winding about the center axis of the wire disc assembly; and At least one first region and at least one second region are correspondingly arranged, and the first region and the second region are alternately arranged on the disk body along the circumferential direction of the disk body, and the first region includes a medium different from the disk body, so that the magnetic field strength of the alternating magnetic field at the first region is different from the magnetic field strength at the second region.

9. The electromagnetic heating cooking device according to claim 8, It is characterized in that The wire reel assembly further comprises a wire reel rack, which is used to be arranged on one side of the cooking container. The coiled wire is coiled around the central axis of the wire reel assembly on the surface of the wire reel frame, and the reel body is configured to be rotatable relative to the wire reel frame around the central axis of the wire reel assembly.

10. The electromagnetic heating cooking device according to claim 8, It is characterized in that The disk body is made of a metal material with a magnetic permeability less than or equal to 10 B / H, and the first area includes at least one opening for allowing the magnetic lines of force of the alternating magnetic field to pass through.

11. The electromagnetic heating cooking device according to claim 10, It is characterized in that The distance between the disc body and the disc winding is 3.5 mm to 10 mm; and / or The disc body has a thickness of 0.4 mm to 2 mm.

12. The electromagnetic heating cooking device according to claim 10, It is characterized in that The area of ​​a single opening is 28 mm 2 Up to 5024mm 2 ; and / or The area of ​​all the openings accounts for 10% to 70% of the area of ​​the disk body.

13. The electromagnetic heating cooking device according to claim 8, It is characterized in that The disk body is made of a first material, the first region is provided with at least one magnetic line of force gathering member, and the magnetic line of force gathering member comprises a second material different from the first material.

14. The electromagnetic heating cooking device according to claim 13, It is characterized in that The first material is a non-magnetic material or a metal with a magnetic permeability less than or equal to 10 B / H, and the second material is a metal with a magnetic permeability greater than or equal to 100 B / H.

15. The electromagnetic heating cooking device according to claim 13, It is characterized in that The magnetic field line gathering member is connected to the disk body via at least one of the following connection structures: The magnetic field line gathering member is embedded in the disk body. The magnetic field line gathering member is attached to the surface of the disk body, and The magnetic line gathering member is snap-connected with the disk body.

16. The electromagnetic heating cooking device according to claim 13, It is characterized in that The distance between the magnetic field line gathering member and the disc winding is 1 mm to 15 mm; and / or The thickness of the magnetic line gathering member is 2 mm to 10 mm.

17. The electromagnetic heating cooking device according to claim 13, It is characterized in that The area of ​​a single magnetic field gathering piece is 28mm 2 Up to 5024mm 2 ; and / or The area of ​​all the magnetic flux converging members accounts for 10% to 70% of the area of ​​the disk body.

18. The electromagnetic heating cooking device according to claim 13, It is characterized in that The second area is provided with at least one heat dissipation hole.

19. The electromagnetic heating cooking device according to claim 7, It is characterized in that In a projection of the wire drum assembly along an extension direction of a central axis of the wire drum assembly, the coiled wire forms an annular region or a circular region with the central axis of the wire drum assembly as a center.

20. The electromagnetic heating cooking device according to claim 1, It is characterized in that The invention also comprises a driving device, which is connected to the wire reel assembly or the cooking container and is used for driving the connected wire reel assembly or the cooking container to rotate.

21. The electromagnetic heating cooking device according to claim 20, It is characterized in that The driving device comprises: A drive assembly for providing a driving force; and A transmission assembly is connected to the driving assembly for transmitting the driving force.

22. The electromagnetic heating cooking device according to claim 21, It is characterized in that The drive assembly is configured as a motor; and / or The electromagnetic heating cooking appliance further comprises a grounding wire, one end of which is connected to the housing of the driving assembly, and the other end of which is connected to a grounding terminal of the electromagnetic heating cooking appliance.

23. The electromagnetic heating cooking device according to claim 21, It is characterized in that The driving assembly is configured as a motor, and the transmission assembly at least includes: A first transmission wheel, coaxially connected to the output shaft of the motor, so as to rotate under the drive of the motor; and A second transmission wheel is connected to the connected wire tray assembly or the cooking container and is connected to the first transmission wheel. The transmission assembly is configured such that the second transmission wheel drives the connected wire reel assembly or the cooking container to rotate synchronously under the drive of the first transmission wheel.

24. The electromagnetic heating cooking device according to claim 21, It is characterized in that The transmission component is made of non-metallic material.

25. The electromagnetic heating cooking device according to claim 20, It is characterized in that It also includes a magnetic shielding cover, which is used to cover at least part of the driving device to shield the alternating magnetic field.

26. The electromagnetic heating cooking device according to claim 25, It is characterized in that The invention also comprises a grounding wire, one end of which is connected to the magnetic shield, and the other end of which is connected to the grounding terminal of the electromagnetic heating cooking appliance.

27. The electromagnetic heating cooking device according to claim 20, It is characterized in that The driving device is used to contact a container wall of the cooking container to drive the cooking container to rotate around the central axis of the cooking container relative to the wire reel assembly.

28. The electromagnetic heating cooking device according to claim 27, It is characterized in that The driving device comprises: A motor for providing driving force; and A friction wheel is coaxially connected to the output shaft of the motor so as to rotate under the drive of the motor. Wherein, the friction wheel is used to contact the container wall of the cooking container.

29. The electromagnetic heating cooking device according to claim 1, It is characterized in that The electromagnetic heating cooking appliance is an electric rice cooker, an electric pressure cooker, an electric stew pot, an electric hot pot, an electric kettle or an induction cooker.

30. The electromagnetic heating cooking device according to any one of claims 1 to 29, It is characterized in that The wire drum assembly is constructed so that the alternating magnetic field has N strong magnetic regions and N weak magnetic regions that are alternately distributed along the circumferential direction of the wire drum assembly, wherein the magnetic field strength of the strong magnetic region is greater than the magnetic field strength of the weak magnetic region, the N strong magnetic regions are evenly spaced along the circumferential direction of the wire drum assembly, and the N weak magnetic regions are evenly spaced along the circumferential direction of the wire drum assembly, and N is an integer greater than or equal to 1.

31. The electromagnetic heating cooking device according to claim 30, It is characterized in that The electromagnetic heating cooking appliance is configured such that one of at least a portion of the wire reel assembly and the cooking container is rotatable relative to the other by ±180 / N degrees.

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